SUMMARY OF PROCEEDINGS AT MEETINGS. XI 



1. Mrs. Bisbee, M.Sc, read a paper on " Sex Determination — ■ 

 A Suggestion," after dealing with the theory of chromo- 

 somes as factors in determining sex, the lecturer proceeded 

 to suggest as a possible solution a metabolic rhythm — an 

 alternation between two types of metabolism giving 

 maleness and femaleness respectively (see " Transactions," 

 p. 5). 



The seventh meeting of the thirty-sixth session was held 

 at the University, on Friday, May 26th, 1922. The President 

 in the Chair. 



1. Miss Herdman read — 



(a) A paper on " Fertilisation and Migration of Echino- 



cardium," by Miss Margaret Lillie ; 



(b) Her own paper on " Notes on Dinoflagellates and 



other Organisms causing Discolouration of the Sand 

 at Port Erin. II (1921)" (see "Transactions," 

 p. 15). 



2. Prof. Dakin explained the structure and use of the 



epidiascope. 



The eighth meeting of the thirty-sixth session was held on 

 Saturday, June 10th. A considerable party of members and 

 students, with Prof. Dakin as leader, visited Hilbre Island and 

 spent a profitable afternoon. The most interesting finds were 

 various worms, but a remarkable feature was the absence of 

 the masses of Sabellaria alveolata that formerly covered the 

 rocks by the life-boat slipway. The place is now occupied by 

 large quantities of mussels. 



At an adjourned meeting held in the University a n was 

 unanimously resolved, on the motion of Sir Win. Eerdman, 

 that Prof. W.J. Dakin. D.Sc, F.L.S.. be elected Presided for 

 the ensuing session, and also act as delegate of the Society i<> 

 the British Association Meeting at II nil. 



