78 LECTURES 



the diseases, the origin and history of all morbid growths, 

 and the repair of injuries among all kinds of animals 

 whatsoever. Human reproduction and development is 

 another subject that would be doomed to wear a very 

 one-sided aspect unless the study was rendered clear 

 through the aid of comparisons carried into the other 

 groups of the vertebrata. Many of the mvertebrata and 

 their several modes of development have also their value, 

 especially certain parasitical forms and the like. Finally, 

 the entire study of all those microscopical species 

 grouped under the various genera of bacteria and their 

 allies, forms a very important part of a medical course, 

 and in reality falls within the science of biology. 



In closing, we may truthfully say, then, that as im- 

 portant as a sound knowledge of his science is to the pro- 

 fessional biologist; as absolutely indispensable as is a 

 practical comprehension of the subject to the properly 

 educated medical man; it is none the less so as forming 

 a part of the training and education of any person, what- 

 soever, in the present day and generation, or of him who 

 makes any pretension to having received in his schooling 

 that kind of instruction which fits him for the real battle 

 of life and a clear understanding of a great many of the 

 problems that he will be called upon to face in this 

 Nineteenth-Century-day life of ours. 



