PROCEEDINGS OF SOCIETIES. 205 



and would be printed in the next number of the Journal, together with 

 the illustrations. 



The thanks of the Society were unanimously voted to Mr. Dallinger 

 for his communication. 



Mr. F. Rutley read a paper " On the Structure of certain Eocks — 

 Obsidian and Leucite, with Notes on the Spheroidal Structure of 

 Perlite." The paper was illustrated by a number of coloured 

 diagrams and by specimens exhibited in the room. 



The President felt sure it would be the pleasure of the Fellows to 

 return their best thanks to Mr. Rutley for his paper, for papers of this 

 kind were extremely rare, and were of great interest and value. 

 Microscopists who did not know the wonderful things to be foimd in 

 rocks, would be greatly astonished at what was to be seen there, if they 

 would take up the examination as a study. Even in slags which had 

 without any question been melted, they might find things which they 

 woidd be sure to say at fii'st sight were organic, and when they came 

 to the study of the minute crystals found in some of these rocks, 

 it was surprising to find how very little there ajjpeared to be of 

 the ordinary character of crystals about them. They would often 

 meet with structures which were extremely curious, and suggested 

 many of the ideas which they usually connected with living bodies. 

 He mentioned this as showing that they should be very cautious 

 in coming to conclusions upon mere resemblances. He quite agreed 

 with Mr. Rutley that the structure of the cavities was very re- 

 markable. He had not examined the Perlites, but fully agreed with 

 Mr. Rutley that the facts were exceedingly curious, and that they 

 represented on a small scale what went on in nature on a large one. 



The Rev. T. W. Freckelton was introduced by the Secretary as a 

 new Fellow, and formally admitted by the President. 



The President reminded the Fellows of the Society that the 

 conversazione to which reference had been made at the previous 

 meeting would be held on the 21st of April, and asked that all would 

 assist in bringing objects of interest on that occasion. The Council 

 had formed themselves into a committee to carry out the arrangements, 

 and they were very anxious to bring together a good collection of 

 objects of real interest. 



The proceedings then terminated, the meeting standing adjourned 

 to April. 



Donations to the Library since February 2, 1876 : 



From 



Nature. "Weekly The Editor. 



Atlienseum. Weekly Ditto. 



Society of Arts Journal Society. 



Quarterly Joiu'nal of the Geological Society. No. 125 . . Ditto. 



Journal of the Linnean Society Ditto. 



The Cincinnati Medical News. 



Bulletin de la Socie'te' Botanique de France. Two parts . . Ditto. 



El Microscopio en Litologi'a. Par Don Francisco Q. G. Eodriguez Author. 

 Dioptrica Nova : a Treatise of Dioptricks. In two parts. 



By William Molyneux, Esq., F.K.S B. D. Jackson, Esq. 



Dr. Thomas Partridge was elected a Fellow of the Society. 



Walter W. Reeves, 



Assist .-Secretary . 



