2 INTRODUCTION 



of formalin or seventy per cent, alcohol will be 

 found suitable for ordinary dissection. If the 

 formalin or alcohol is injected into the cavities of 

 the brain through the infundibulum, better prep- 

 arations will be secured. The cat's heart and eye 

 will answer for general dissection, but it will be 

 found convenient to substitute the heart and eye 

 of the pig for more extended study. These can 

 be easily obtained from the slaughter-house. The 

 description here given of the heart and eye of the 

 cat serves equally well for the pig, with the ex- 

 ception that the tapetum is wanting in the latter 

 animal. 



Each student should be provided with the un- 

 mounted bones of one specimen for the work of 

 the first chapter. Each of the remaining chapters 

 really requires a fresh and complete animal, 

 though with the exercise of considerable care it is 

 possible to study both circulatory and nervous 

 systems from a single specimen. At least three 

 animals, then, are necessary. 



Minute directions for dissection often retard the 

 student more than they aid him, and in this guide 

 only the general method is indicated. The inge- 

 nuity of the student, directed by the instructor, will 

 suggest the details. For more exhaustive works 

 on the anatomy of the cat, the student is referred 

 to " Anatomical Technology," by Wilder and 

 Gage, and " The Cat/' by Mivart. 



The figures are diagrammatic, but will serve to 



