

PREFACE. 



For several years the writer has had a growing convic- 

 tion that the teaching of pharmacology might be greatly 

 facilitated, and rendered much more effective and compre- 

 hensive, if each student could have in his own hands a 

 laboratory manual giving exact, specific, detailed directions 

 for carrying out most of the experiments which he will 

 be called upon to perform in the study of this most inter- 

 esting, vital and complex subject. The small number of 

 manuals of this character which heretofore have appeared, 

 in this field may be most strikingly compared with the very 

 large number of laboratory manuals which have been pub- 

 lished on such subjects as chemistry, botany, physics, 

 zoology, etc. And the thoughtful teacher might be at once 

 inclined to ask himself whether or not the general scope 

 and character of the work done in these various experi- 

 mental fields may not have been to some extent indicated 

 by the number and character of experimental manuals de- 

 voted to these subjects. In consideration of these points 

 the author has therefore ventured to hope that in present- 

 ing this manual of experimental pharmacology to teachers 

 and students, some small amount of good may be accom- 

 plished. 



My especial thanks are due to the publishers, who have 

 rendered every assistance they could in the progress of 

 this work; to Mr. Paul Knabe, who has faithfully devoted 

 much time and labor to the proof reading, the arrangement 

 of the illustrations, and the printing of the book; and to 

 Mr. Paul P. Halleck, who in making the drawings contained 

 herein has given me the advantage both of his extensive 

 experience as an artist, and of his special training as a 

 physician. I am deeply indebted to Mr. John A. Higgins, 





