No. 497] THE BUREAU OF FISHERIES 



329 



the now rather unwieldy collection of miscellaneous re- 

 prints. 



Bradley M. Davis, Ph.D., past assistant professor of 

 botany in Chicago University, finished during the summer 

 the catalogue of the marine algae, together with a section 

 of the report dealing with the distribution of alga? and 

 Zostera in the deeper waters of the bay and sound. Much 

 of this manuscript had been written during the preceding 

 spring, Dr. Davis having spent the months of April and 

 May at the laboratory. The catalogue will contain more 

 than 250 species of alga?, with records of their distribu- 

 tion and seasonal habits; and will include a list of the 

 stations at which they were dredged. An introductory 

 section on the general characteristics of the algal life of 

 Buzzards Bay and Vineyard Sound has since been 

 written, and the manuscript covering the botanical side 

 of the survey is now practically complete, except for 

 such editing as may be necessary to make the botanical 

 and zoological portions conform in arrangement and 

 style. An important part of the summer's work in 

 botany was the completion of maps showing the distribu- 

 tion of 75 species of alga? which grow in the deeper waters 

 of the bay and sound. It is expected that the most im- 

 portant of these maps will be published in connection 

 with the catalogue, since they show, much more clearly 

 than is possible in a mere description, the striking fea- 

 tures in the distribution of the most characteristic 

 species. 



Donald W. Davis, professor of biology, Sweet Briar 

 College, Sweet Briar, Va.— (1) An Investigation of the 

 Effects of Various Conditions acting at the Time of 

 Impregnation upon the Size and Vigor of Fish Embryos. 

 For the time being, attention was restricted to the effects 

 of various temperatures, and Fundulus heteroelitus was 

 selected for experimentation because of its convenient 

 spawning period. Each lot of eggs, taken from a single 



