BOOKS OF REFEREKCE. 181 



3. Coelenterata : Hydroids, Jelly-fishes, Polyps, etc. 



2. Porifera: Sponges. 



1. Protozoa : Amoeba, Paramcecium, Vorticella, etc. 



BOOKS OF REFERENCE FOR THE ZOOLOGICAL 

 LABORATORY. 



Of the following books, Nos. 1 to 9 are almost indis- 

 pensable. For general reference, at least, one of the first 

 three should be at hand, and every one of 4 to 9 gives 

 great aid in practical work. 



1. Text-Book of Zoology. Claus & Sedgwick. Macmillan & Co. 



2 vols, $8.00. 



2. Zoology. Packard. Henry Holt & Co. $3.00. 



3. Text-Book of Zoology. Nicholson. D. Appleton & Co. $1.50. 



4. Handbook of Invertebrate Zoology. Brooks. Cassino. 



$3.00. 



5. Practical Biology. Huxley & Martin. Macmillan & Co. 



$1.50. 

 (5. Practical Physiology. Foster & Langley. Macmillan & Co. 

 $2.00. 



7. Guides for Science Teaching. Hyatt and others. D. C. 



Heath & Co. 10-40 cts. each. 



8. First Book of Zoology. Morse. D. Appleton & Co. $1.00. 



9. Zootomy. Parker. Macmillan & Co. $2.25. 



10. The Crayfish. Huxley. D. Appleton & Co. $1.75. 



11. Anatomy of Vertebrated and Invertebrated Animals. 



Huxley. 2 vols. D. Appleton & Co. $2.50 each. 



12. Guide to the Study of Insects. Packard. Henry Holt & 



Co. $5.00. 



13. Insects Injurious to "Vegetation. Harris. Cassino. $6.00. 



