108 MEETINGS. 



who, on the contrary, inclined to the germ theory of the 

 reproduction of the various limbs and organs at the time of 

 the shell-casting. Several members took part in the conver- 

 sation which ensued, and Mr. J. Linwood Pitts gave an 

 interesting description of the manner in which on one occasion 

 he was fortunate enough to see a crab cast its shell while he 

 was watching it, and which, in his opinion, bore out Mr. 

 Collenette's theory. This experience was the more valuable, 

 because it appears that there are scarcely any recorded 

 instances in which naturalists have observed this change of 

 shell actually taking place. At the same time many of the 

 members considered that Mr. Rose's germ theory might throw 

 considerable light upon the reproduction by crustaceans of 

 limbs accidentally lost, even if it were untenable as an 

 explanation of the way in which the natural change of the 

 whole shell takes place on certain periodical occasions. 



Hearty votes of thanks to Mr. Collenette and Mr. Rose 

 brought the proceedings to a close. 



Monthly Meeting held on January 15th, 1891. 



The members of this Society, together with a few invited 

 friends, spent an exceedingly pleasant evening, at their room 

 in the Guille-Alles Library, the re-union being devoted to an 

 exhibition of microscopic slides, accompanied by brief descrip- 

 tions. The slides were projected upon a screen, by means of 

 a powerful oxyhydrogen microscope, the objects comprising 

 preparations of marine fauna, insects, botanical specimens, 

 minerals, &c. Messrs. Marquand, Collenette, Luff, Nickolls, 

 and Derrick, kindly described the various objects as they 

 were thrown upon the screen, and the whole was a great 

 success. The best thanks of all present are certainly due to 

 these gentlemen who so skilfully organised the exhibition, 

 and provided such an instructive entertainment. 



Monthly Meeting held on February 20th, 1891, Mr. Adolphus 

 Collenette in the chair. 



There was a very fair attendance of members and 

 visitors. The minutes of the last meeting having been 

 read, Mrs. Spong was unanimously elected member of the 

 Society. 



Mr. Luff then read a note on the capture of an extremely 

 rare moth — Garadrina ambigua — by Mr. Hodges, on the 



