"journal. Ma™rii7a'] NOTES AND MEMORANDA. 255 



them altogether new and strange — were found in these fluids. He 

 abstains from mentioning all details as to the nature of the materials 

 used, and many interesting facts observed by him in his experiments, 

 as he hopes soon to lay a full account of his researches on the subject 

 before the Royal Society. 



A History of British Diatomacese, by Dr. Donkin, Lecturer on 

 Forensic Medicine to the University of Durham, is preparing for pub- 

 lication by Mr. Van Voorst. 



Fungi and Disease. — We observe with satisfaction that at the 

 meeting of the American Medical Association, which will be held at 

 Washington on the 3rd inst., among other paj)ers will be one by Dr. 

 Lemuel J. Deal, Pennsylvania, chairman, " On the Cryptogamic Origin 

 of Disease, with Special Reference to Recent Microscopic Investigations 

 on that Subject." 



Recent Works on the Embryology of Articulates. — The ' Ameri- 

 can Natiu'alist ' gives the following useful summary in its April 

 number : — " Professor Claparede has published a paper, richly illus- 

 trated, ' On the Embryology of Worms,' especially Spii-orbis, in Siebold 

 and Kolliker's ' Jom-nal.' Melnikow writes in ' Wiegmann's Ai'chiv ' 

 ' On the early stages of Tcenia cucumerina,' with a few figures. Dr. 

 Richard Greef publishes in the same number of the ' Archiv ' some 

 most interesting researches on certain remarkable forms of Arthropoda 

 and worm-types, illustrated by four plates. Dr. Anton Dohi'u has 

 lately published the first part of his ' Researches on the Structure and 

 Development of Arthi-opoda ' (Insects and Crustacea), with nine excel- 

 lent plates. It is extracted from Siebold and Kolliker's ' Journal.' 

 He here records his observations on the embryology of Cuma and 

 allied genera, of certain sea spiders (Pycnogonidte), and thinks that 

 embryology shows that these curious animals, classified by many 

 naturalists with the Arachnida, are really Crustacea ; and of Dai)hnia, 

 Praniza, and Paranihura Costana. A paj)er of the greatest interest to 

 entomologists is M. Ganin's ' Contribution to a Knowledge of Develop- 

 mental History in Insects ' in Siebold and Kolliker's ' Journal.' It is 

 fully illustrated." 



Croydon Microscopic Club.— The Croydon Club owes its delivery 

 so much to the skilful nursing of many of the leading Fellows of the 

 Royal Microscopical Society, that the following account from the 

 ' Lancet ' of April 23rd will interest all our readers : — 



" A large meeting has been held at Croydon for the purpose of 

 organizing a body of gentlemen interested in the microscope and its 

 revelations. The chair was occupied by H. Lee, Esq., who was sup- 

 ported by a number of savants well known for their proficiency in 

 science. In his introductory remarks, Mr. Lee dwelt on the gratifying 

 circumstance that the Club commenced with upwards of eighty mem- 

 bers, including three Fellows of the Royal Society, four of the Lin- 

 nfean Society, three of the Geological Society, and several of the Royal 

 Microscopical Society, along with members of the Quekett Club. Mr. 

 Lee, after illustrating the combined pleasure and profit to be gained 



