"Why is 'lEX so hard to use?" is the most frequent comment/complaint made by (frustrated) 'lEX users. The answer: Because it is programmable (has many features commonly found in programming languages), because it pays attention to detail, and because its creator has developed it for his own use (perhaps also his administrative assistant's) and not for general use. The material presented here is a direct result of this complaint and is an attempt to make it easier for inexperienced users to get the kind of high-quality typesetting that is possible with 'lEX. The material is based on classes taught since 1985, and on the author's personal experience with 'lEX, which includes writing three books and numerous articles, handouts, and letters. Both introductory and advanced material is included here. There are many examples as well as a detailed discussion of topics, such as \ valign and \emergencystretch, that are only briefly touched upon in The TpJXbook. Chapter 20 describes the macros used to typeset this book; it also lists the METAFONT programs for the special characters used.

Reprint of the original, first published in 1839.

The Biology of Stentor summarizes all that has been learned about the biology of a certain group of ciliate protozoa: the stentors. Topics covered range from form and function in Stentor to behavior, fine structure, growth and division, and reorganization. Regeneration is also discussed, along with polarity, metabolism, genetics, and primordium development. This volume is comprised of 20 chapters and begins with a characterization of Stentor, with emphasis on its particular advantages in addressing general problems of biology. The reader is then introduced to form and function in Stentor, particularly S. coeruleus. The following chapters focus on the behavior (food selection, swimming, response to light, etc.) of stentors and the fine points of structure in terms of which this behavior is to be explained and which demonstrate the highly complex and precise achievements of morphogenesis. The remaining chapters explore growth and division in Stentor as well as the course of reorganization and regeneration; development of the oral primordium and how it is activated and inhibited; rate of regeneration in relation to the polar axis; fusion masses of whole stentors; and reconstitution in disarranged stentors. Various species of Stentor are also described, together with the techniques used to study them. The final chapter deals with hypotheses concerning the morphogenesis of ciliates. This book will be of interest to students and practitioners of biology and physiology.