vi Animal Micrology 



number of tissues and organs with directions for properly 

 preparing them for microscopical study. 



Inasmuch as every experienced worker has his own "best" 

 method for the preparation of almost any tissue, it is manifestly 

 impossible to give all "best methods" in such a table. The writer 

 believes, however, that the student will find the methods 

 recommended all good ones which will yield satisfactory results. 



In Appendix D some directions are given for collecting and 

 preparing material for an elementary course in zoology. 



It is hoped that the volume will prove of use: (1) as a class 

 textbook; (2) as a guide to the independent individual worker 

 (teacher, physician, college or medical student, or novice) ; (3) as 

 a reference book for teachers, in the preparation of material for 

 courses in elementary zoology, histology, or embryology. 



In the matter of expressing his obligations the writer is at a 

 loss to know just what to do. Many of the methods in microscopi- 

 cal technique have been handed down tradition-wise from one 

 worker to another until their origin is unknown; they are the 

 accumulated experiences of several generations of workers. Fur- 

 thermore, many points have been absorbed, as it were, by the 

 writer, from fellow-workers in the Universities of Chicago, 

 Nebraska, and Cincinnati, respectively; consequently the obliga- 

 tion cannot be specifically expressed. Where the name of the 

 originator of a method is known, due credit has been given. The 

 books to which the author is most heavily indebted are the vol- 

 umes of Gage, and Carpenter, already mentioned, Lee's Microto- 

 misfs Vade-Mecum, Whitman's Methods in Microscopical Anat- 

 omy and Embryology, Hardesty's Neurological Technique, Fos- 

 ter and Balfour's Elements of Embryology, Minot's Laboratory 

 Text-book of Embryology, Huber's translation of the Bohm- 

 Davidoff Text-book of Histology, Stohr's Text-book of Histology, 

 Mallory and Wright's Pathological Technique, Bausch's Manipu- 

 lation of the Microscope, and the Journal of Applied Micros- 

 copy. Grateful acknowledgment is also made to the various 

 manufacturers of microscopical instruments and appliances for 

 the loan of most of the cuts which have been used in this volume. 



M. F. G. 



