Introduction-First Traces-Incentives to the Study-First Definite

Announcement of the Germ Theory-Phlogiston-Zymosis-

Jenner-Fermentation Hypothesis-Vaccine-Beginning of the

Nineteenth Century-Early Discoveries-Astier-Schwan-Lie-

big's Views-Difficulties-Schroeder's Discoveries-Schroeder's

Conclusions-Pasteur and his Work-Needham and Spallanzani

-Pasteur's Plan of Work..................................

SECOND LECTURE.

.......11 to 34

Bastian and his Work-Archebiosis-Logical Sequence-Difficulties-

Modes of Propagation of Micro-organisms-Utilizing Discoveries

-Lister's Antiseptic Surgery-Nature of the Evidence-Direct

Examinations for Micro-organisms-Evidence Unsatisfactory-

Miasm and Contagion-Miasmatic Contagion-Infection Experi-

ments Discussions by Important Men..........

THIRD LECTURE.

Beale's Work-The Amoeboid Theory of Contagion-Pasteur-The

Bacillus Anthracis-Koch and his Work-Aniline Staining-Dry

Slide Cultivations-Infection Experiments-Pathogenic Micro-

organisms now certainly Demonstrated-What is Necessary for

the Demonstration of a Pathogenic Micro-organism-The Evi-

dence that Pathogenic Micro-organisms are Different from

ordinary Bacteria-Spores and Habits of Micro-organisms—

Summary

.57 to 76

SECOND PART.

FOURTH LECTURE.

Production of Poisons by Micro-organisms-Propositions-Necessity

for a Physiological Study of the Subject—Digestion and Absorp-

tion-Propositions-Primary Digestion-Absorption-Nutritive

Digestion-Soluble Ferments-Digestion by the Yeast Plant-

Mr. Lister's Experiments-Digestion by Bacteria-Digestion by

the Higher Plants-Sach's Experiments-Sprouting of Seeds-

..79 to 95

Diastase-Nutrition.........

FIFTH LECTURE.

The Yeast Plant-Cellular Digestion in the Higher Animals-Re-

sorptive Digestion-Resorption of the Roots of the Milk Teeth-

Digestion of Blood Clot-Digestion of Animal Ligatures-Diges-

tion of Sponge - Necrosed Bone - Pathological Formation of

Soluble Ferments—Relation of Soluble Ferments to Living Tis-

.......96 to 110

sues-Parasites.......

SIXTH LECTURE.

Waste Products-Life as a Force-Law of the Formation of Waste

Products-The Nature of Waste Products-Waste Products of

the Higher Animals; of the Higher Plants; of Bacteria-Alka-

loids........
.111 to 128

SEVENTH LECTURE.

Poisons Developed by Micro-organisms — Farther Investigation

Needed-Physiological Changes in Micro-organisms-Manner

of Action-Inflammations and Pus Formation-Blood Dis-

Dental Caries; its Relation to the Germ Theory of Disease.....149 to 169

PART FIRST.

ACKNOWLEDGMENT.

This volume contains a series of lectures, delivered before the students of the Chicago College of Dental Surgery and a number of practitioners who were ticketed especially for this course. The Lectures now appear in their present form through the co-operation and kindly assistance of the Officers and Faculty of that Institution, to all of whom I gratefully acknowledge myself indebted for many favors.

THE AUTHOR.