PROCEEDINGS OF THE SOCIETY. 513 



years that an intermediate physical state existed between the solid and 

 liquid forms of matter — i.e. substances presented themselves as liquids 

 whilst still retaining; certain characteristics of their solid state. But 

 comparatively recently this intermediate state had been found to occur 

 in animal tissues, and it was to Adami of Montreal and Aschoff of 

 Marburg (who made a communication to the Royal Society in May 11)06) 

 that we owed the demonstration of potential fluid crystals in certain 

 organs — e.g. the Adrenal gland. In the body these substances, probably 

 some combination of oleic acid, only possessed the potentiality, but when 

 cooled down to room temperature these oily globules were found to 

 possess the quality of double refraction by which they were easily 

 recognised when subjected to polarised light. With ordinary light they 

 were quite indistinguishable from fat globules. 



Mr. Rousselet said he was exhibiting under a Microscope in the 

 room a group of six Stephanoceri, mounted with all their tentacles 

 expanded. 



Mr. E. M. Nelson's paper " On Eye-Pieces for the Microscope " was 

 read l\y Dr. Hebb. 



The thanks of the Society were unanimously voted to Dr. Hebb and 

 to Mr. Nelson for their communications. 



Mr. F. Enock then gave a very interesting lecture " On the Life- 

 History of the Tiger Beetle, Cicindela campestris," illustrating the subject 

 by a series of excellent lantern slides, exhibiting the insect in all stages, 

 the structure of its burrow, its method of capturing its prey, and its 

 metamorphoses from larva to pupa and imago. The slides were from 

 original drawings by the lecturer, and represented the results of observa- 

 tions extending over a period of twenty years. 



The President said that the well-merited applause which had 

 accompanied and followed Mr. Enock's remarks showed how much 

 interest and pleasure they had derived from this lecture. He could not 

 quite determine which of the two, Mr. Enock or the insect, had dis- 

 played the more patience or ingenuity : but however that might be, he 

 felt sure they had all been greatly interested to hear what his old friend 

 Mr. Enock had described so graphically and with so much hnmour, and 

 they were all grateful to him for the treat which he had given them. 

 He had shown great patience and perseverance in unravelling the \\'-(:- 

 history of this beetle, and as gratitude had been defined to b% a sense of 

 favours to come, they hoped it would in this case ind'itjate their desire 

 to hear in the future more and more of Mr. En^yok's very interesting 



lectures. . ^ 



^ — 



Pursuant to the notice given at the pT-eceding Meeting, the Meeting 

 was then made Special for considerivig the desirability of altering 

 By-law 65a so as to read as follows :—/- 



" 65a. The Council shall at th^. Annual Meeting propose a Fellow 

 or Fellows of the Society to act, either separately or jointly, as Curator 



