MUSEUM OF COMPARATIVE ZOOLOGY. uy 
and, in collaboration with Miss Adele M. Fielde, The Reactions 
of Ants to Material Vibrations. Proc. Acad. Nat. Sci. Phila- 
delphia, Vol. 56, pp. 642-650. 1905. 
Professor Castle has continued his studies on inheritance in 
- guinea-pigs and rabbits. He has published, in addition to No. 
158 of the Contributions from this Laboratory, an address, given 
before the American Society of Naturalists at its meeting in 
Philadelphia, on The Mutation Theory of Organic Evolution, 
from the Standpoint of Animal Breeding. Science, Vol. 21, 
pp. 021-525. April 7, 1900. 
Dr. Rand has published three papers in the Contributions from 
this Laboratory, Nos. 156, 165, and 166, the second in conjunc- 
tion with Mr, J. L. Ulrich, He also supervised the work the 
results of which are embodied in Contribution No. 167. 
Dr. Petrunkévitch has published, as No. 160 of the Contribu- 
tions from this Laboratory, a-paper on Natural and Artificial 
Parthenogenesis, presented before Section F (Zodlogy) of the 
American Association for the Advancement of Science at its 
meeting in Philadelphia. It is a matter of deep regret to the 
Department that Dr. Petrunkévitch is compelled to remove from 
Cambridge and give up his connection with the Laboratory. 
The Virginia Barret Gibbs Scholarship was reassigned for 
1904-05 to Mr. John H. McClellan. 
Of the five persons carrying on work at Woods Hole during 
the summer of 1904, two received aid from the Humboldt Fund 
to the amount of $22.85, and of the six working at the Bermuda 
Station one received from the same source $70.00. 
During the summer of 1905 seven students carried on work at 
the United States Fisheries Bureau in Woods Hole, three of 
them being employed as assistants in the work of the Bureau. 
Five students received aid in the summer of 1905 from the 
Humboldt Fund, amounting to $132.85, four while working at 
Woods Hole, and one at Cambridge. 
Professors Castle and Mark have received renewals of grants 
from the Trustees of the Carnegie Institution of Washington to 
aid in the study of questions in heredity. 
The meetings of the Zodlogical Club were held on the after- 
noons of Mondays throughout the year, and the topics under 
discussion were announced in the Calendar. There were twenty- 
five meetings, and fifty-five papers were presented ; thirty-two of 
_ them were summaries of original work. 
