44 



THE AMERICAN NATURALIST [Vol. XLIII 



Oyster {Ostrea edulis L.). Bull. U. S. Fish Com., II, pp. 

 159-167, 12 figs. 



3. 1884 ('86). Horst. The Develop, of the Oyster (Ostrea edulis L.). 



Eep. U. S. Fish Com., pp. 891-910, Pis. I and II. 



4. 1883. Huxley. Oysters and the Oyster Question. Eng. Illus. Mag., 



Oct. and Nov., pp. 47-55, 112-121. 

 American work must be considered to have originated with Brooks, whose 

 discoveries inspired investigators at home and abroad and pointed the way 

 to possibilities and methods of culture that were ably carried forward by 

 Ryder, Winslow, Rice and others. Of the many papers, reprints, summaries, 

 etc., published by Brooks I mention but one: 



5. 1880. Brooks. Development of the American Oyster. Rep. of the 



Com. of Fish, of Maryland, pp. 1-18, 10 pis. 



6. 1882 ('83). Ryder. On the Mode of Fixation of the Fry of the 



Oyster. Bull. U. S. Fish Com., II, pp. 383-387, 9 figs. 



7. 1882-83 ('84). Ryder. A Sketch of the Life-history of the Oyster. 



4th Ann. Rep. of the IT. S. Geol. Surv., pp. 317-333, 

 pis. 73-82. 



8. 1882 ('84). Ryder. The Metamorphosis and Post-larval Stages of 



Development of the Oyster. Rep. U. S. Fish Com., X, 

 pp. 779-791. 



9. 1884. Ryder. A Contrib. to the Life-history of the Oyster. Fisheries 



and Fishery Industries of the U. S., Sec. I, pp. 711-758. 



10. 1882 ('84). Winslow. Rep. of Exper. in the Artif. Prop, of Oysters. 



Rep. U. S. Fish Com., X. pp. 741-762. 



11. 1889. Jackson. The Develop, of the Oyster with Remarks on Allied 



Genera. Proc. Bos. Soc. Nat. Hist., XXIII, pp. 531-556, 

 4 pis. 



12. 1890. Jackson. Phylogeny of the Pelecypoda. Mem. Bos. Soc. Nat. 



Hist., IV, pp. 277-400. 

 Canada has done little towards a scientific study of oyster development. 



13. 1895 ('96). Prince. Peculiarities in the Breeding of Oysters. Special 



Reports, Ottawa, pp. 10-13. 



14. 1904. McBride. The Canadian Oyster. The Canadian Becord of 



Science, Montreal, IX, July, pp. 145-156, Figs. 1-4. 



15. 1905. Stafford. On the L-arva and Spat of the Canadian Oyster. 



The American Naturalist, Boston, pp. 41-44. (Prelim- 

 inary to this paper.) 



« Brief Notes and Criticisms 



Brooks (No. 5, p. 25, of the preceding list) says: "All my attempts 

 to get later stages than these failed, etc." He refers to his Figs. 44 and 

 45 which were perhaps a little younger than my Fig. 1 and were six days 

 old. I never could understand the claim that they might develop to this 

 stage in twenty-four hours. 



Horst (2, 165; 3, 904) was unable to get stages older than his Fig. 12, 

 a straight-hinge shell of .16 mm., which according to Ryder (7, 791) would 

 be equivalent to an American larva of half this length, i. e., little younger 

 than my Fig. 1. He adds: "I have also been disappointed in my attempts 



