S20 liEroX{tS DJSf THE BTATE OF SCIENCE* 



were found to give rise to infection in ' sterilised ' ConVotiUd, whereas 

 control experiments with similar batches of developing young Convoluta 

 showed no infection. 



This work has since been followed up by a prolonged histological 

 investigation into the fine structure of the infecting organism at different 

 stages of its career, both when free in the egg-capsule of Convoluta and 

 when ingested by the Avorm. The results of this Avork are almost ready for 

 publication, and show that the green cell undergoes important changes 

 within the body of its host. 



This work has arisen out of the research conducted by Messrs. Gamble 

 and Keeble on the pigment of Crustacea, and forms part of the experi- 

 mental programme which these authors have in hand bearing on the pre- 

 sence and functions of pigment in the lower animals. In reference to 

 this topic the following experiments have been carried out and will be con- 

 tinued by Messrs. Gamble and Keeble. The results of cultivating Hippolyte 

 varians under varying intensities of incident and reflected light ; the 

 function of the green cells in Hydra when placed under known cultural 

 conditions; the nature and function of the 'yellow bodies' in Poly- 

 etoniella. 



The Committee ask to be reappointed, with permission to retain the 

 unexpended balance of the grant. 



The Freshivater Fishes oj South Africa, with special reference to those' 

 of the Zambesi. — Interim Ileport of the Cormiiittee, consistiwj of 

 Mr. G. A. BouLExoER (Chairviaii), Dr. J. B. V. Gilchbist (Secre-- 

 tciriO, and Mr. W. L. iScEATEK. 



Tul-; whole of the grant (50^.) has been spent by Dr. Gilchrist in securitig; 

 specimens, in providing apparatus for the capture and preservation of 

 fishes, and in issuing circulars in order to enlist assi.stance in procuriug- 

 them from var.iou.s parts of .South Africa. 



Dr. Gilchrist writes that he has sent to the various Governmentsf 

 copies of a little pamphlet on the preserving and sending of fish, and that 

 he has already received some replies. He has also sent ofT from Cape' 

 Town five boxes with formalin, but they have not yet been returned to 

 him. He has himself collected a good many specimens from various parts 

 of Cape Colony and from the Transvaal, and has received a series pro-- 

 cured in the Northern Transvaal by Dr. Gunning. 



Zoohigij Orijanisation. — Report of the Committee, consisthuj of Prb-- 

 fessors E, Kay Lankestek (Ghainmn), ti. J. Hickson (Secretary), ■ 

 T. W. Bridge, J. Cossar Ewakt, M. Hartog, W. A. HERDMA^^ 

 and J. Graham Kerr, Mr. O. H. Latter, Professor E. Av" 

 Minchin, Dr. P. 0. Mitchell, Professor C. Lloyd Morgan,- 

 Professor E. B. PouLTON, Mr. A. Sedgwick, Mr. A. E. Shipley,. 

 and Rev. T. R, R. Stebbing. 



The Committee arranged for a meeting of zoologists in Edinburgh ori' 

 March 30, 190G. Sir John Murray was voted into the chair, and a dis- 

 cussion took place on the Teaching of Natural History in the schools of' 



