10 ANNUAL REPORT OF THE 



where, on human sense organs ; has written a number of reviews 

 for the " American Naturalist," and has had considerable editorial 

 work to do. 



Professor Castle is continuing his experimental study of heredity 

 in guinea-pigs and rabbits, and breeding experiments with insects. 

 He has published during the year " Contributions," Xo. 146, and 

 has republished u Contributions," No. 136, with some additions 

 and alterations, in Science, N. s., Vol. 18, Xo. 456, pp. 396-406, 

 Sept. 25, 1903. Other publications not in the " Contributions " 

 are : " The Heredity of ' Angora ' Coat in Mammals." Science, 

 n. s., Vol. 18, Xo. 467, pp. 760-761, Dec. 11, 1903; and "Sex 

 Determination in Bees and Ants." Science,^, s., Vol. 19, No. 479, 

 pp. 389-392, March 4, 1904. He has also written reviews pub- 

 lished in the " American Xaturalist." 



Dr. Rand has completed a rather lengthy paper on " The 

 Behavior of the Epidermis of the Earthworm in Regeneration," 

 which will soon be published in Roux's " Archiv fiir Entwickelungs- 

 mechanik," and has nearly ready for publication — in collaboration 

 with John L. Ulrich — a paper on "The Posterior Connections 

 of the Lateral Vein of the Skate. He also has under way further 

 studies on Regeneration in the Earthworm. 



Dr. Petrunkevitch has published " Kunstliche Parthenogenese." 

 Festschrift zum 70. Geburtstag des Herrn Geheimen Raths 

 Prof. Dr. August Weismann in Freiburg i. B. Zool. Jahrb. 

 Suppl. VII., 62 pp., 3 Taf. ; and " Gedanken liber Vererbung." 

 Freiburg i. B., Speyer und Kaerner, 1904, 83 pp. 



The Virginia Barret Gibbs Scholarship for 1903-04 was held 

 by Mr. John H. McClellan, a graduate of the University of 

 Michigan, and subsequently Instructor in Zoology in the Univer- 

 sity of Illinois. , 



Five persons, including one instructor, carried on work at 

 Wood's Hole during the summer of 1904 ; one, at the Marine 

 Biological Laboratory, and four, at the United States Fisheries 

 Bureau. Of the latter, two were in the employ of the Bureau. 



Professors Castle and Mark received from the Trustees of the 

 Carnegie Institution of Washington a grant of 8500 to aid in the 

 study of questions of heredity. 



The Zoological Club held meetings on Wednesday afternoons 

 throughout most of the year. The topics presented were usually 

 announced in advance in the " Calendar." There were twenty-five 

 meetings, at which fifty-four papers were presented, twenty-nine 



