350 REPORTS ON THE STATE OF SCIENCE. 
Development of the Sexual Cells.—Interim Report of the Committee, 
consisting of Mr. J. J. Lister (Chairman), Dr. H. W. Maretr 
Tims (Secretary), Mr. J. STANLEY GARDINER, and Mr. G. H. F. 
NuTraLL, wppointed to enable Dr. H. W. Marett Tims to conduct 
experiments with reqard to the effect of the Sera and Antisera on the 
Developinent of the Sexual Cells. 
A seErRrIEs of experiments have been made with guinea-pigs to test the 
effects of testis extract on the normal Spermatogenesis and Odgenesis, and | 
incidentally on the leucocytes. 
The injections have been intra-peritoneal, and extending over varying 
lengths of time. 
The histological investigations are not sufficiently complete to warrant 
publication, though so far as they have gone they seem to point to definite 
effects. 
Guinea-pigs have been selected for investigation for two reasons 
(a) the large size of the testis-cells, and (b) the normal Spermatogenesis in 
the guinea-pig has been described in detail, and figured by J. E.S. Moore, 
Walker, and others. 
Zoology Organisation.—Interim Report of the Committee, consisting of 
Sir E. Ray LankesteR (Chairman), Professors 8S. J. Hickson 
(Secretary), G. C. Bourne, T. W. Bripak, J. Cossar Ewart, 
M. Hartoa, W. A. HerpMAN, and J. GRAHAM Kerr, Mr. O. H. 
Latter, Professor H. A. Mincuin, Dr. P. C. MircHe.., Professors 
C. Luoyp Morean, E. B. Poutton, and A. Sepawick, Mr. A. E. 
SHIPLEY, and Rev. T. R. R. STEBBING. 
Tue Committee report that no meetings have been summoned during 
the past year. 
There are some important matters at present under the consideration 
of the Committee, which render it desirab!e that they be reappointed. 
The Investigation of the Oscillations of the Level of the Land wm the 
Mediterranean Basin.—Interim Report of the Committee, consisting 
of Mr. D. G. Hocarts (Chairman), Mr. R. T. GUNTHER (Secretary), 
and Drs. T. G. Bonney, F. H. Gutntemarp, J. 8. KELTIE, and 
H. R. Mit. 
THE work for which this Committee was appointed is proceeding, and in 
presenting this interim report the Committee ask to be reappointed, with 
the allotment of the unexpended balance of the grant. 
Mr. Giinther left England for Southern Italy as soon as possible after 
the expiration of the summer term in Oxford, with the intention of 
examining certain maritime sites in Calabria in connection with the 
work of this Committee. It will not be possible to submit any report 
on the results until the meeting of the Association in 1908. 
