Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Critical Thinking: A Student's Introduction provides the skills and attitudes needed to become a skilled thinker, an effective problem solver, and a sound decision-maker. Students will learn-step by step-how to understand complex texts, analyze issues, think logically, and argue effectively. They will hone the thinking skills needed to succeed in college, in their career and in life. It is written to provide a versatile and comprehensive introduction to critical thinking through a student-centered approach that covers all the basics of critical thinking-and more-in reader-friendly language.

The chapters of this book describe numerous successful examples of automation in microbiology, e.g., radiometric detection of bacteremia, instruments for detection of bacteriuria, machines for organism identification and susceptibility testing, and automated antigen and antibody measurement systems. In addition, there are discussions of exciting but not yet proven methodologies such as chromatography, flow cytometry, and other applications of radiometry. There are also important discussions regarding improved means of data communication and ways to improve the clinician's use of test results. Lastly, there are candid assessments of the best and worst aspects of the current spectrum of automated instruments for microbiology. It is hoped that the reader of this volume will be left with a feeling of excitement at the possibilities that lie ahead for application of instrument techniques in the diagnosis of infectious diseases.

Botanists and zoologists have recognized for centuries the specificity of various insects for plants, and entomolo- gists have long been aware that insects defend themselves from predators by emitting repulsive odors. Only recently have chemists and biologists established a joint endeavor for studying the chemical relationships between plants and insects. The present symposium volume of the Phytochemical Society of North America's RECENT ADVANCES IN PHYTOCHEMISTRY consists of eight papers dealing with phytochemical relation- ships between plants and their insect herbivores. The fifteenth P.S.N.A. annual symposium and meeting was held in August, 1975, on the campus of The University of South Florida, Tampa. The chemical defenses of apparent and unapparent plants were contrasted by Feeny. Rodreguiz and Levin illustrated parallel defense mechanisms of plants and insects and then Hendry, Kostelc, Hindenlang, Wichmann, Fix and Koreniowski discussed chemical messengers for both plants and insects. Subsequently Beck and Reese reviewed plant contributions to insect nutrition and metabolism. Indepth studies for the monarch butterfly-milkweed interaction were presented by Roeske, Seiber, Brower, and Moffitt and for the cotton boll weevil-cotton plant relationship by Hedin, Thompson, and Gueldner. In the latter portion of the symposium Rhoades and Cates presented a general theory concerning the coevolu- tion of insects and plant antiherbivore chemistry.

Praise for "Overdrive: Bill Gates and the Race to Control Cyberspace"

"James Wallace offers many tales of . . . temper tantrums, antitrust tussles with the Justice Department, and general dirty tricks Microsoft has allegedly played on its competitors." -"The New York Times" Book Review

Praise for James Wallace's "Hard Drive: Bill Gates and the Making of the Microsoft Empire"

"A stupendous success story. This is the most informative book yet on Bill Gates and Microsoft." -the "Washington Post"

"Remarkable . . . This book will make you wonder why you didn't buy Microsoft stock when it went public." -"The Wall Street Journal""An engaging, almost classic tale of a boy who finds power in gadgets and then won't let go." -"Los Angeles Times"

Praise for "Overdrive: Bill Gates and the Race to Control Cyberspace"

"James Wallace offers many tales of . . . temper tantrums, antitrust tussles with the Justice Department, and general dirty tricks Microsoft has allegedly played on its competitors." -"The New York Times" Book Review

Praise for James Wallace's "Hard Drive: Bill Gates and the Making of the Microsoft Empire"

"A stupendous success story. This is the most informative book yet on Bill Gates and Microsoft." -the "Washington Post"

"Remarkable . . . This book will make you wonder why you didn't buy Microsoft stock when it went public." -"The Wall Street Journal""An engaging, almost classic tale of a boy who finds power in gadgets and then won't let go." -"Los Angeles Times"