Before commencing any procedures in organic chemistry, you must become familiar with the safety, hazards, apparatus and methods described here in this book and in the referred reading. Those of you who think "I don't need to learn all this preliminary bullshit, because the formula is in easy to understand language" are wrong — dead wrong.

It is true I have reworded the formulas so that the average high school student can understand and complete the operation easily. However, I do not have time to warn the unknowing and incompetent every time a potential hazard is encountered, as most every chemical has dangerous properties. Ethyl ether, as an example, has more BTU's than dynamite and is much more easily ignited. I will not waste time or paper to describe the properties or dangers of every chemical encountered in every formula. It is the duty of any chemist, amateur or professional, to learn these properties. Know what you're dealing with at all times, under all conditions. I have taken much time compiling a superb glossary of most every chemical, operation and apparatus encountered in this book. If you find something I have not listed in the glossary, or if you use a formula not listed in this book, do not assume it to be unimportant. Look it up in the Merck Index and remember its properties.

Anyone who has been asphyxiated or even seen some large third degree bums caused by chemicals or heat, will be able to relate to the rigid safety measures I will impose on you in this chapter.

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