NOTES AND MEMORANDA. 227 



anastomoses are quite independent of tlie liei)atic cells, which in fact 

 they surround. This he considers has to do with the secretion of 

 bile. The hepatic cells he terms glycogenic cells, therefore he 

 suj)poses they have to do with the formation of sugar. But he by no 

 means so clearly exj)lains their connection with the portal circula- 

 tion. 



The different Characters of Tumours of the Bosom. — This is too 

 medical a subject for our readers generally, but those of our profes- 

 sional readers will find the paper full of interest. The author dis- 

 cusses the opinions of Velpeau, Sir A. Cooper, and Virchow, and he 

 comes to the conclusion that modern ideas tend much more toward 

 our old English surgeon's views than to either of the others. He 

 gives a good classification of the tumours, which is based upon the 

 differences he has observed, both generally and microscopically. The 

 illustrations are good, and they afford fair justification of the author's 

 ideas.— Jour7ial de V Anato^nie, No. 2, 1874. 



, The Passage of Blood-cells through the Vessel. — Professor F. C. 

 Donders and Th. W. Engelmann have been studying this point very 

 minutely, and they have given the results of their inquiries for 1873 

 in a work published in the Dutch. Those who understand that 

 language will do well to read it. As far as we can make out, they 

 appear to have been unable to succeed in finding any aperture through 

 which the white corpuscle passes through the vessel. But then we 

 must recollect that their observations were not made with a binocular, 

 but with a uni-ocular microscope. 



NOTES AND MEMORANDA. 



Infusoria. — Notice to Microscopists. — Mr. W. Saville Kent, 

 F.L.S., F.E.M.S., &c., being engaged upon a new treatise on the 

 Infusoria, to be shortly published, invites communications from 

 Fellows of the Eoyal, Quekett, or other Microscopical Societies, 

 and microscopists generally, upon any new or doubtful forms of In- 

 fusorial life that may come under their notice. Any record of phe- 

 nomena not generally known in association with previously-described 

 varieties will be of value, as also local lists of species. Address, 

 Wentworth House, Stoke Newington, London, N. Postal expenses 

 of specimens will be defrayed. 



