APPENDIX. 



PREREQUISITES. 



In order to use this book advantageously, there will be needed : 



1. In Charge of the Course. A teacher with some time and 

 opportunities at his disposal for acquainting himself and his classes 

 with the fauna of his locality. 



2. In the Laboratory. Plenty of light; plain desks or tables at 

 which students may work ; a few good microscopes, with the usual 

 accessories, slips, covers, watch glasses, pipettes, 1 etc.; the simple 

 reagents described on pp. 276 and 277 ; a water supply; receptacles for 

 organic refuse. 1 



3. In the Hands of every Student. A good lens ; a scalpel; a small 

 pair of sharp-pointed dissecting scissors ; several dissecting needles ; l 

 a small forceps ; l bristles for probing ; a notebooks and pencils, for 

 descriptions and drawings. 



4. In the Library. A few good books of reference. All of the 

 following are recommended : 



Lang's Text-book of Comparative Anatomy. Recent and standard, 



but expensive. (Macmillan & Co., New York.) 

 Marshall and Hurst's Practical Zoology. $3.50. (G. P. Putnam's 



Sons, New York ; Smith, Elder, & Co., London.) 

 McMurrich's Invertebrate Morphology. $4. (H. Holt & Co.,. New 



York.) 

 Thomson's Study of Animal Life. $1.50. (Charles Scribner's Sons, 



New York.) 

 Jordan's Manual of the Vertebrates. $2.50. (A. C. McClurg & Co., 



Chicago.) 



Edward Potts's Monograph of the Fresh Water Sponges. $1. (Obtain- 

 able from the author, at 228 South Third Street, Philadelphia.) 

 jCornstock's Manual for the Study of Insects. $3.75 net. This book 



is especially commended to the general student of entomology. 



(Comstock Publishing Co., Ithaca, N.Y.) 



1 See note on cheap apparatus, p. 287. 

 275 



