This book reflects the personal prejudices I have developed in twenty years of reading the scientific literature. I like monographs; good ones assemble a great deal of information in a logical sequence and in enough detail to enable one to see why current beliefs are held. For this purpose, it is entirely useless to write "as Smith has shown21,81,117 ---- " That only means that one must go to the library and turn up Smith's original papers, and one's object in reading a monograph is precisely to avoid that neces- sity. One needs to know what Smith did and why he thought his observa- tions...