L 



Bibliographical Notices. 377 



on that group, taken in conjunction with the special articles upon 

 the various families and genera scattered through the work, 

 furnishes the best guide at present extant to the classification of 

 those interesting though lowly organisms. Upon Bacterium and 

 the Schizomycetes we find a considerable quantity of new informa- 

 tion brought in, as also upon the parasitic insects and Acarina and 

 the Infusoria, derived from the recent publications of Megnin and 

 Andrew Murray upon the former groups, and from the valuable 

 manual of the Infusoria of Mr. Saville Kent. We are sorry to note, 

 however, that while fully availing himself of the last-mentioned 

 important work, the editor has entirely passed over the most mag- 

 nificent work that has appeared of recent years upon any group of 

 Protozoa, namely Prof. Leidy's ; Monograph of the Freshwater Hhi- 

 zopoda of North America.' This is the more to be regretted as, 

 since its publication, a manual founded upon it has been published 

 in America, and there can be no doubt that many of the genera 

 proposed by Prof. Leidy will be frequently referred to in the litera- 

 ture of the microscope. 



We had noted several other points in which it seems to us that 

 tli ere is room for improvement ; but fault-finding is an unsatisfactory 

 business, and all the deficiencies that we could indicate would but 

 very slightly derogate from the general excellence of the book. 

 Its chief value consists in the immense mass of varied information 

 upon all subjects of interest to niieroscopists, collected in its pages 

 in a most convenient form for reference ; and from the mode of treat- 

 ment adopted it is, as we have before pointed out, well fitted to 

 serve as a guide in the investigation of many departments of natural 

 history quite outside the domain of microscopic work. On this 

 ground we can recommend it to all students of natural history, and 

 especially to those located in country places at a distance from 

 libraries. To such workers it will prove invaluable as a general 

 book of reference. 



The plates with which the volume is illustrated are for the most 

 part the same as in the last edition ; but five new ones have been 

 added, bringing the whole number up to fifty-three, a large pro- 

 portion of them coloured. The immense number of figures contained 

 in these plates, with the numerous woodcuts scattered through the 

 text, render this one of the best-illustrated volumes with which we 

 are acquainted. 



A Catalogue of the Collection of Birds formed hy the late Hugh 



Edwin Strickland, M.A., F.R.S., $c. By Osbekt Salvix, SLA., 

 P.K.S., Strickland Curator in the University of Cambridge. 

 Cambridge University Press, 18S2. 



The title of the present volume fully explains its contents, and 



It is a descriptive 



furth 



catalogue of the extensive collection of birds formed by the late 

 Mr. Strickland and bequeathed by his widow to the Cambridge 



Ann. & Mao. N. Hist. Ser. 5. Vol. xi. 26 



