LINNEAN SOCIETY OF LONDOJT. 21 



examined the Ballot-papers and cast up the Votes, reported to the 

 Vice-President in the Chair, who declared the result as follows :— 



President : Prof. E. B. Poultoi^, F.E.S. 



Treasurer: Horace W. Monckto:^, P.Gr.S. 



Secretaries : Dr. B. Daydon Jackson. 

 Dr. Otto Stapp, F.E.S. 

 Prof. E. A. MiNCHiN, F.E.S. 



The Eev, T. E. E. Stebbing, F.E.S., exhibited and commented 

 upon some pen-and-ink drawings of Jasus lalandii by Dr. J. D. 

 F. Gilchrist, in illustration of the larval stages of that crustacean, 



A short discussion followed, concerning the best methods of 

 illustration. 



The Vice-President in the Chair then addressed Dr. Leonard 

 DoNCASTBR, F.E.S., and said : — 



I have great pleasure in presenting to you on behalf of the 

 Linnean Society, the second Trail Award, generously founded by 

 Professor Trail, with the object of encouraging study that throws 

 light on the substance known as Protoplasm, or on what may in 

 the progress of knowledge be regarded in a corresponding way as 

 the physical basis of life. 



Tour work during the period covered by this Award — that is, 

 during the past five years — has resulted in most valuable contri- 

 butions towards the elucidation of one of the most fundamental 

 problems presented by the study of living things, namely, the 

 manner in which the characteristics of parents or progenitors are 

 inherited by, and transmitted to, the offspring or descendants,^ — a 

 problem which you have studied in special relation to the minute 

 cytological structure, development and mechanism of the germ- 

 cells. 



Following this line of investigation with great industry and 

 acumen, you have published, on the one hand, masterly observa- 

 tions upon the gametogenesis of various types of insects, in the 

 course of which you have made known many new facts of gi'eat 

 interest, especially with regard to the behaviour of the chromo- 

 somes ; and, on the other hand, your experiments have brought 

 to light many new and remarkable phenomena in heredity and 

 genetics, especially with reference to sex-limited inheritance 

 and sex-determination. 



As an example of such investigations I need only refer to your 

 classical researches upon the Magpie-Moth, Abraxas grossulariata, 

 in which you discovered and studied a most remarkable case of 

 sex-limited inheritance with heterozygous females. 



Combining the results of laborious and detailed microscopical 



