5 comments about The Natural Soap Book: Making Herbal and Vegetable-Based Soaps.

1. As a soapmaking beginner, I found this book to be very helpful. It gives a good grounding in the basic knowledge, chemistry etc. that every soapmaker needs and takes you through the process step by step. There is also a lot of information about safety, working with lye that is important to know, though I can see that it might put some people off. Overall, I would recommend this book - its jam packed with useful information.



2. I have a couple other books on soapmaking, but found this book gives me information that has helped me understand the process much better.



3. I will try to make my own soap and this book is exactly what I was looking for : everything explained from beginning. Thank you Susan



4. Great book. I've been making soap for over ten years and this is the first book I purchased when I started. I consider it one of my best sources of information.



5. I just finished reading Susan Miller Cavitch's The Natural Soap Book and found it lacking in several respects.
   
   There is a pervasive preachy tone to this book that annoyed me horribly. Ms. Cavitch uses the book as a soap box (pardon the unintended pun) to promote several personal points of view, two central ones being her diatribes against the use of animal products and anything synthetic. My grandfather made soap the old-fashioned way, using the hot process method. He made his soap by boiling lye with animal fat he had rendered himself, much of it supplied by his children (including my mother). My mother always kept a coffee can in the refrigerator, and whenever she cooked any fatty meat, the grease when in the can. When it was full, it when to her father to be turned into soap. This grease probably wasn't much good for anything else, and was certainly full of unhealthy saturated fats; had it not gone into soap, it would have gone into the garbage. The vegetable oils Ms. Cavitch advocates using are mostly edible, and in many poor countries, vegetable oils are a significant source of calories. Increasingly, non-food uses of vegetable oils, most significantly an ever increasing demand for bio-diesel, have driven the price of these oils up to the point that many poorer populations around the world are being pushed dangerously close to starvation. The increased demand for these oils has also led to whole-sale destruction of virgin tropical forest, as huge plantations of oil palms are planted. So, our luxury all-vegetable soaps are made from oils that in many nations would be considered too valuable as food to be used for such a frivolous purpose as bathing, and further, the production of these soaps, although insignificant compared to the production of bio-fuels, can still not be completely divorced from the destruction of natural forest and the concurrent loss of bio-diversity inherent in the increased production of vegetable oil. So, which is better? To plow under rain forest to plant oil palms for soap, when the workers who labor on these plantations can't even afford the oil they produce for food, or to use animal fats that would otherwise go to waste? Personally, I prefer vegetable oil soaps, but I am also aware of the consequences of this preference and do not pretend that this puts me on a higher moral ground than people who bathe with tallow products. And although I also prefer `natural' products, many of these products are luxury items that are beyond the budget of most of the world's population. People who can't afford food are unlikely to spend $6.00 on a four ounce bar of pure castile soap. Synthetics, although by no means perfect and by no means lacking in potential harmful side effects, have made improved hygiene affordable to huge segments of the human population that would otherwise face much higher mortality rates due to a lack of basic cleanliness. These products have brought inestimable benefit to mankind, and although not without their faults, I would have liked to see a far more balanced discussion of them.
   
   My final comments on Ms. Cavitch's book are technical. She doesn't discuss the use of the stick blender in home-made soap production. Many of the problems addressed in her chapter on trouble shooting can be avoided by the use of these wonderful gadgets; in fact, the 16 hour trace times she mentions for some soaps can be reduced to less than half an hour using one. Her section on trouble shooting also advises the soap maker to discard most failed batches; there is no discussion of rebatching, a technique that can be used to salvage all but the worst soap-making failures. The rescued soap might not be salable, but isn't it better to give away seconds than to throw your time and materials away?
   
   I would advise a novice soap-maker to skip this book and buy Anne L. Watson's Smart Soapmaking instead. It is short, concise, practical, and a pleasure to read. It avoids many of the shortcomings that mar Ms. Cavitch's book.

5 comments about Manufacturing Processes for Engineering Materials (5th Edition).

1. I think that the book is very good on the fundamentals of manufacturing and a must read. It serves as an excellent reference book in my opinion and is well worth its high price tag.



2. This book is one of the best in manufacturing engineering, even if there are a few mistakes in some mathematical deductions. I think it is a very didactic and easy to learn book, it shows almost every manufacturing process used by modern industry.



3. This book is one of the best in manufacturing engineering, even if there are a few mistakes in some mathematical deductions. I think it is a very didactic and easy to learn book, it shows almost every manufacturing process used by modern industry.



4. The emphasis of this book seems to be more on the basic mechanics of the different processes it describes. That's fine, and important to understand manufacturing, but...

   BUT, he gives very little attention to how the material being processed responds to the processing. Without a better understanding of the microstructural effects -- and ensuing DEfects -- it may be too hard to troubleshoot the processes described in this book.

   My professor was flipping through the early chapters of this book (where the materials issues are presented) and declared them "cheesy."

   So, to sum up: this good book becomes great by combining it with other books/courses/professors/etc that will interject materials issues into this books discussion of the mechanical issues.




5. i was privileged enough to have dr. kalpakjian as a teacher in college before he retired. we used his 3rd edition as our textbook. now as i start my career in engineering, i am finding that i need to refer to the book! i borrowed the book in college for his class and am now buying a copy for our office. a great reference. very well thought out book with excellent diagrams. worth every penny.

5 comments about Atmospheric Science, Volume 92, Second Edition: An Introductory Survey (International Geophysics).

1. (Update--there is a new edition of this textbook, out in spring 2006)
   
   It's too bad Wallace and Hobbs never got around to revising this edition of the text, written in 1977. Of all the undergraduate textbooks I had, this was by far the best.
   
   W&H cover all the important topics in meteorology and atmospheric science. Each chapter is very well written, easy to understand, and has good graphics and thought-provoking (often difficult!) questions at the end of each chapter. Each chapter ends with a series of mathematical questions--some of which require a good bit of thinking to arrive at the right equation to use; and also a series of "explain or interpret these statements." This is where you find out how much you really know!
   
   Why do I like this book? Each chapter can, to some extent, stand on its own. Even though the material is dated (Chapter 5, on clouds and storms, would need significant additions in a course taught today), fundamental principles were the same then and are explained well. The historical notes about famous scientists also add character to the text.
   
   My suggestion for a new reader: Chapters 1, 2, 8, 3, and 5 in that order. Then add Chapters 9, 4, 6, and 7. This way, you get the fundamental theory and then get to apply all you know to actual weather systems (in 3 and 5). The remaining four are almost like special topics and can be read at any time. If anyone has better suggestions, let me know!



2. Hands down this text is the best for anyone looking for an introduction to the atmospheric sciences. There is almost no topic this book doesn't provide an overview of. Personally my favorite section is Thermodynamics. In my opinion the authors give a very clear and thorough introduction to the subject. Other topics in the book are also equally as good. As an introductory text (2nd year) this book provides a very good base for students in the atmospheric sciences to build upon. I find that even in 4th year I still referred back to the text to recall some of the basics that tend to get lost when you become so fixed on the math.

   Excellent text, well worth the money (like almost any book in the field, it is expensive!). The fact that the book hasn't changed in 25yrs (even the cover is the same!) says something about it's quality.




3. A good book for very brief introduction. Some sections are treated much better than others, where it may have been better to leave out the lesser covered topics rather than include them. This book seems to be a good book for an undergraduate level introduction to atmosphere similar to an intoduction to astronomy course.



4. This is a truly well-written book; introducing the major concepts of atmospheric science in a clear and logical manner. After having the opportunity to study with the author, I am thoroughly impressed with his depth of knowledge in the field. A must-own for any aspiring atmospheric scientist.



5. Very Comprehensive Simple explanations. cover all the important topics in meteorology and atmospheric science. Very helpful in my first course of atmospheric science

5 comments about Clay and Glazes for the Potter.

1. this book is quite informative of clays, glazes, colorants, temperatures and many little details that a ceramicists needs in order to experiment and produce different effects with various materials. this books is very helpful and easy to read..



2. Everything you ever wanted to know - and more - about clays and glazes. If you just want a quick introduction to the topic, you should skip this book. If you want a well-written, very thorough, and very clear explanation of basic ceramic principles, this is it. If you want to go even further, delving into the intricate complexities of specific clay and glaze formulations, that's all here too.



3. This is the best book to start with and never part with if you are a clay artist.



4. It is astonishing every potter should know it
   It say most news that other book don't write in a way simple and undersatndable even for the novice.
   I find that is complement is another book on the glaze spectrum written by robin HopperThe Ceramic Spectrum: A Simplified Approach to Glaze and Color Development.



5. I did not like the book, as a result I returned it. It seemed a bit deep, not real interesting, and not a recipe book.

3 comments about Analysis, Synthesis, and Design of Chemical Processes (2nd Edition) (Prentice Hall International Series in the Physical and Chemical Engineering Sciences).

1. I really like how they focused on Hysys which is what is mostly used in industry. This is a great book for undergrads and grad taking designs in chemical engineering.



2. Item received as described. Took much longer than expected. Seller didn't notify me that there would be a two week delay until I contacted them and waited several days for a response.



3. It's a very helpful book for getting a real and useful information about the common tasks and activities in the engineering design

4 comments about Molecular Driving Forces: Statistical Thermodynamics in CHemistry & Biology.

1. The topic of this book, the physical chemistry of molecules, especially those relevant to biology, is one of the most challenging courses to a college student in chemist. But these authors have tried to make it easy for you - and they succeed. They used figures, pictures and analogies to help you to understand some of the most sophisticated concepts in science. For example entropy. The authors are leading researchers in the field and they brought a unique perspective to the subject; the writing is very lucid.



2. I have this book assigned as a text book for one of my classes and it is superb. Very clear explaination from the very basics of statistics and how it builds up to thermodynamics and beyond. The book succintly explains all of the necessary math and has instructive examples to drive the point home. I really like this book!



3. I always consult this book when I need to brush up my stat. Mech. Highly recommended.



4. This book covers a broad field of topics not present in similar books more than usual ones. A great value for a teacher or for advanced undergraduate students!

5 comments about Four Laws That Drive the Universe.

1. This book is clearly written, presenting the zeroth law, first law, second law and third law of thermodynamics taking the mystery out of the usual presentations of this subject.
   Professor Atkins presents the thermodynamic laws starting with comparisons with mechanical systems that most people would understand and builds upon that for an easily understood treatise on the subject matter.



2. This book is unevenly written. Much of it would be of value to the college-educated reader, much of it would not.
   
   I have a doctorate in physical chemistry (Atkins' field) and could work through it fairly easily. I would not recommend it to my daughter (doctorate in biochemistry) and I am not sure about recommending it to my son (doctorate in solid state physics).
   
   The discussion of temperatures below the absolute zero appears to have been put in just to be cute.



3. This presentation of an intrinsically interesting topic is a logically correct derivation - which seems very important to the author - but to what purpose? To understand it the reader has to be comfortable with subtle concepts of physics, and to enjoy it the reader has to appreciate a development presented as if for a mathematical proof, with apologies if any items are mentioned out of order. But for someone with that level of scientific interest and background, it doesn't offer any insights or new ways of looking at the topics. For instance, the author distinguishes between energy and enthalpy at an early stage, and requires the reader to know or very quickly learn the concept of work as force times distance. But then there's no reward for mastering the distinction and the reader is left to wonder why it's important. I'm a physicist and I greatly enjoy well written popular or semi-popular science books. This wasn't one of them.



4. To be fair, Atkins sets himself a difficult task: make thermodynamics palatable, and even tasty, to a general audience. I probably represent his target audience: I am college educated, and I worked for a couple of years as a biochemistry technician. I keep up with science topics through Scientific American and several web sites. And I enjoy the Science Channel whenever the cosmology shows are on. But I don't possess deep physics knowledge, save for dimly remembered college physics and chemistry courses.
   
   Does Atkins succeed? Mostly yes, but I must offer some caveats. This text does presume some relevant background at the college level. And, although Atkins' prose is readable, he occasionally misses a tone and examples that might better hold the reader's interest. Still, on balance, the presentation works, and at least stays focused on preparing the main ingredients.
   
   Where does Atkins get soggy? He only rarely capitalizes on the wow factor. He says that thermodynamics is relevant to each and every one of us in our lives. He's right. But his examples are a bit lifeless and the allusions to "regular life" are few. When he does bring levity and relevance, it resonates rather well. But the reader is left to bring his or her own imagination to the text and create most such insights for oneself. As I am also an artist, technical writer, and recently a business analyst, I found many "ah ha!" moments to ponder. But these were mostly of my own making, with only the barest guidance from the author.
   
   Finally, what's missing? Atkins might have alluded more thoroughly to the world of information theory. He only hints about this fascinating subject. Atkins might have explored the micro-states of matter with more gusto. Also barely mentioned was the notion of efficiency, although at a micro level this has great meaning for those working in nanotechnology. And there was no indication of how such principles must also apply to the living world, the systems we call organisms. For my money, some appetizers and desserts would have engendered more enthusiasm from this reader.
   
   Nevertheless, I found the book helpful, readable, and generally enjoyable. And that is no small thing for such a subject. If I don't grant it five stars, it's not because of what is there, but rather what is not.



5. Compact and concise review of 4 laws of thermodynamics. Book explains the laws easily, using insightful examples, so almost anyone could read it.

5 comments about Biodiesel Basics and Beyond: A Comprehensive Guide to Production and Use for the Home and Farm.

1. WOW!!!
   
   I've been looking on the web at making fuel for some time and never felt I was getting the whole picture. This is ALL the info you will ever need on the subject. From system setup throught dealing with waste, this book explains it all in laymens terms. It shows that making fuel is not going to be the easyest thing you ever do. In the same breath, it shows that its within reach of us "normal" people.
   
   It really a very informative but light read. Not only the process is reviewed, but also the economics and history. Definitly worth the read weither you want to make fuel, or just learn more about the subject.



2. This book was purchased to get a better understanding of the biodiesel production process and industry. It also goes into great detail in how to build your own quality biodiesel plant. The author also dispells the fact from fiction involving quality biodiesel production. It is a good book for the person very interested in building a plant and is wanting to make an educated decision before he builds the plant. Overall, Great Book!



3. This book is great and details exactly how to make and use your own biodisel. It also covers saftey and logistical aspects of creating it which I thought was quite nice. The only reason though that i gave it 4 stars was becuase it is a bit wordy. There is a lot of information in this book and it can be overwhelming but overall it is very good and useful.



4. After researching most of the books available on the market on the subject of BIO-DIESEL I eventually settled for this book.
   It is well-written and covers every aspect of the manufacture of bio-diesel that the smaller-scale individual would look for in a book. The author is well-versed in his subject and is a definate must-have book if you are looking to get into this field.
   Definately worth 5/5 stars from me.



5. This book was very well written and researched. The book is detailed but still very interesting. I felt lead by some suspense. I was thinking, "Given all the hard truths, Can he really make it work for the home scale producer?!?" - and in the end, he does.
   I wish he'd said a little more about using SVO but that's not what this is about.

5 comments about Soapmaker's Companion: A Comprehensive Guide with Recipes, Techniques & Know-How (Natural Body Series - The Natural Way to Enhance Your Life).

1. I am only just getting into soapmaking and found this book to be comprehensive and interesting for the most part. What I did not find helpful was the limited (and often dangerous) lack of direction that the author gives re: safety and soapmaking. References like, 'be ready to leave the room' or words to that effect, if you are overcome by fumes, is not my idea of dealing with safety issues, in a professional and sustainable way. Im still looking for information before I begin making soaps but this book did pique my interest even more. Limited what's available at present, finding a book on soapmaking that covers all bases, completely and accurately. It is a craft/business that is growing by leaps and bounds though, hopefully someone will write a book that really covers every issue in detail. Ill be ready to purchase!



2. I've been making soap for some time and have enjoyed this book immensely. It has lots of good suggestions and tons of excellent recipes.



3. The Soapmakers Companion has been in print for more than ten years now. My copy of this book is worn and stained from many soapmaking sessions. Despite the drift of time and my accumulated knowledge, this is one book that I return to frequently for review of all that pertains to Soapmaking. One of the strong points of this book is that it gets you up and running making soap. The recipes work their way from the relatively simple Soap Essentials Bar comprised of a basic coconut/olive/palm oil mixture to more elaborate recipes such as transparent soap and soap in the round. While Susan Miller Cavitch notes that this book is not that much of a basic book, yet I believe that even if one has never made soap before, this is an excellent book to start with.



4. I found her information very helpful and clear. My mother also uses this book and is the one who suggested it to me. She has been making soap at home for years and finds this book the best one she's seen.



5. I really enjoy this book for ideas and inspiration. She has some truly wonderful soaping ideas in here, and I love just browsing through it.
   
   That being said, I really don't use it that much. The recipes call for too many ingredients, are WAY to heavily superfatted to last, and her mixing method (in a stand mixer) takes forever. I can stick blend my soap to trace in just a couple of minutes.
   
   We've also found out a few things about grapefruit seed extract since this book was published. Basically, it does little to nothing to preserve the shelf life of your soaps....a lot of reputable suppliers are pulling it from the retail inventory and substituting other antioxidants.
   
   If you're looking for some interesting ideas, by all means invest, but don't make this your first book.

1 comments about Solutions to Red Exercises for Chemistry: The Central Science.

1. Pretty helpful to have for the course. It tends to leave out answers to the simplest questions from the beginning of the problems in each chapter but otherwise is good. For me, I could use a little more step by step answers for some of the solutions but it may may be just fine for others. Overall, I would recommend having this manual for the course.