254 REVIEWS. 



London and its immediate neighbourhood. For this purpose, the 

 area has been narrowed to allow of all the sections mentioned 

 being easily visited by the London half-holiday maker during the 

 Saturday afternoons of one summer. 



The other works of this series are also of a very interesting 

 nature. 



Elements of Histology. By E. Klein, M.D., F.R.S., etc. 

 Third edition. {Lojidon: Cassell and Co. 1884.) 



This is one of the very useful " Manuals for Medical Students," 

 to whom, from its convenient size and compact form, it is very 

 suited to form a pocket companion. For easy reference, each 

 important paragraph (upwards of five hundred) are numbered. 

 The work also is illustrated with 181 well-executed ens^ravinsfs. 



We can confidently recommend this valuable little manual to 

 the notice of all our readers who are students of Animal Histo- 

 logy. The well-known repute of its author, Dr. Klein, is, we 

 venture to think, a sufficient guarantee for its excellence, and 

 renders any further notice of the work on our part unnecessary. 



We have received from C. Henry Kain, Esq., Camden, N.J., 

 U.S. America, a Photographic copy, on the reduced scale of one- 

 half diameter, of the very important "Atlas der Diatomageen- 

 kunde In verbindung mit den Herren Griindler, Grunow, Janisch, 

 Weissflog und Witt, Herausgegeben von Adolf Schmidt." 



Mr. Kain tells us he was induced to make a Ferro-prusiate 

 copy of this work for his own use. He has since supplied as a 

 special favour copies to several of his friends, and has only a few 

 now remaining on hand. The style of the blue print is, of course, 

 not to be compared to the beauty and clearness of the original 

 plates, but they are sufiiciently distinct to enable the microscopist 

 to identify any of the forms represented. 



The copy now before us consists of 40 pages of letterpress and 

 80 plates, all in Blue Photography. 



The Desmids of the United States, and List of American 

 Pediastrums, with eleven hundred illustrations on fifty-three 

 coloured plates. By the Rev. Francis Wolle, Member of the 

 American Society of Microscopists, Bethlehem, P.A. (U.S.A.), 

 1884. {Londo7i : W. P. Collins, i^y, Great Portland Street?) 



This magnificent work on the Desmidiace8s of the United 

 States contains, besides the fifty-three plates (each of which is 

 accompanied on the opposite page by a descriptive cata- 



