1000 



SCIENCE 



[N. S. Vol. XXXIII. No. 861 



A large amount of material was preserved 

 with a view of working out the life history 

 of several species as far as possible, and is 

 being worked up as rapidly as time will per- 

 mit. 



The fresh blood of a large number of indi- 

 viduals was carefully examined for trypano- 

 somes or Hemosporidia, but with uniformly 

 negative results. 



Dr. James J. WoKe, professor of biology, 

 Trinity College, Durham, N. C, spent the 

 months of July and August at the laboratory. 

 Dr. Wolfe collected material and began studies 

 with a view to publishing a complete life his- 

 tory of Padina. The microscopic technique 

 was worked out and a beginning made on the 

 cytological side of the problem. In addition 

 sLsty-six cultures consisting of germinating 

 tetraspores, fertilized and unfertilized eggs, 

 were started in the laboratory on oyster shells 

 and later transferred to the harbor for the 

 purpose of testing by cultural methods the 

 theory of alternation of generation and also 

 the vitality of eggs which germinate partheno- 

 genetically. The cultures which survived 

 were collected and forwarded to Dr. Wolfe 

 for examination later in the season. Con- 

 trary to published notices, female plants were 

 found here in abundance. These bear a close 

 resemblance to tetrasporic individuals — a fact 

 which probably accounts for their having 

 been overlooked. Contrary also to published 

 notices, it was found rather late in the sea- 

 son that there is a regular succession or 

 periodicity in the production of the sexual 

 elements. 



Dr. H. S. Colton, of the University of 

 Pennsylvania, worked at the laboratory dur- 

 ing the spring. During the previous winter 

 at the University of Pennsylvania, Dr. Colton 

 had been working on the morphology and 

 physiology of the pyloric gland of the ascid- 

 ian, Botryllus. This organ is composed of 

 branching tubules with blind endings. These 

 tubules ramify over the walls of the intestine, 

 opening by means of a single duct into the 

 stomach. This gland he has found to have 

 the characters of an excretory organ in 

 Botryllus. 



While at Beaufort last spring, he was able 

 to extend these observations on to other forms 

 of Tunicates — Amaroucium, Perophora, As- 

 cidia, Styela and Molgula. The result of 

 these observations helped confirm the conclu- 

 sion arrived at by the study of the organ in 

 Botryllus. 



Dr. J. M. Wilson, of Washington, D. C, 

 made collections and preparations of selach- 

 ian brains for the purpose of comparison with 

 the teleostean brain, especially that of 

 Ameiurus. 



Mr. W. H. Kibler, of GuiHord CoUege, col- 

 lected material for the study of the origin of 

 the sex cells of fishes. Consecutive stages in 

 the development of the toadfish were obtained, 

 together with certain stages from the blenny 

 and Fundulus. 



Mr. L. F. Shackell, instructor in physiol- 

 ogy, St. Louis University School of Medicine 

 (in addition to his collaborative work with 

 Dr. Lyon), collected considerable material for 

 a study of the nutritive value of the edible 

 crab, Callinectes sapidus. A study is also 

 being made on the chemical changes taking 

 place in Callinectes during the moulting 

 period. Most of the analyses are being made 

 in St. Louis. 



Mr. Peter Okkelberg, of the University of 

 Michigan, studied principally fishes and fish 

 parasites. Most fishes were found to be in- 

 fested with parasites and collections were 

 made for future study. 



A general study was also made of the local 

 fauna. Note was taken of the distribution 

 and habits of the different forms, with special 

 reference to their adaptation to environment. 

 Ample opportunity was furnished for the 

 study of live animals under control. The 

 structure and development of many forms 

 were also studied. 



Protozoans, jelly-fish and larvse of different 

 kinds were obtained by towing, and a study 

 was made of the material brought up by the 

 dredge in various parts of the harbor. The 

 extensive shoals and beaches were frequently 

 surveyed and all the material found was 

 studied as far as time permitted. 



