} 



90 



" Eleventh Annnal Repoi't of the Liverpool 1 -, ^x. a • ^ 

 '^ )■ trom the Society. 



Microscopical Society" ... ... J 



" Proceedings of the Geologists' Associa-" 



tion '' 

 "Seventh Report of the New Cross Micro- 

 scopical Society "... 

 " Fifth Annual Report of the Postal Micro- ' 



scopical Society''... 



" Journal and Proceedings of the Royal "i 



Society of New South Wales "... J 



" Report of the Department of Mines in} 



New South Wales " ) 



" The Midland Naturalist" ... ... ... in exchange. 



"The American Naturalist "... ... ... „ „ 



" Science Gossip " from the Publisher. 



"The Analyst" ... ... ... ... ,, „ 



*' New Commercial Plants " ... ... ... ,, Mr. T. Christy. 



"Natural History Rambles " ... ... ,, Dr. M. C. Cooke. 



" Annals of Natural History " ... ... Purchased. 



" Marine Polyzoa," Hincks ... ... ... ,, 



The thanks of the meeting were voted to the donors. 



Mr Ingpen called the attention of members to an Album of Specimens of 

 Marine Algae, mounted and sent for exhibition by Mr. F. W. Smith, of 4, 

 Clifton Place, Falmouth, who would be glad to communicate with any 

 gentleman interested in the subject. 



A paper by Dr. Silvester Marsh, "On Bleaching and Washing Micro- 

 scopical Sections," was read by Mr. Ingpen. 



Mr. W. H. Gilburt said it occurred to him that for scientific purposes the 

 processes recommended were hardly satisfactory in several respects ; because, 

 if they wanted to observe the relation of the tissues the one to the other, it 

 was necessary to do something more than simply bleach them. So also 

 with regard to sections. Sometimes it was necessary to cut them thick in 

 order to see the relation of the parts, and it would thus be necessary to get 

 rid of the cell contents as well as the colour. Again, if they wanted to ex- 

 amine the cell contents, they must do ho in their natural condition, and not 

 bleached ; for they were well aware that during the bleaching process these 

 cell contents became shrunken ; so that for purposes of study thoy must 

 always be used as fresh as possible. He, therefore, thought that so far 

 as practical work was concerned, they would do better to adhere to the old 

 plan. 



Dr. Matthews said there was a mode of differentiation of tissues which 

 seemed too often to be overlooked, and that was with the Polariscope, and 

 strongly commended to the members of the Club a little more careful appli- 

 cation of the use of Polarized light in such matters. If the object under 

 examination did not yield to one selenite, it would no doubt do so to another. 

 The thanks of the meeting were unanimously voted to Dr. Marsh for his 



