377 
Bibliographical Notices. 
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 Khi- 
zopoda of Korth 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 
there 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 microscopists, 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 by the late Hugh 
JEdtvin StricJeland, M.A . , F.R.S., 6fc. By Osbeet Salvin, M.A., 
F.B.S., Strickland Curator in the University of Cambridge. 
Cambridge University Press, 1882. 
The title of the present volume fully explains its contents, and 
renders much further explanation unnecessary. It is a descriptive 
catalogue of the extensive collection of birds formed by the late 
Mr. Strickland and bequeathed by his widow to the Cambridge 
Ann. & Mag. N. Hist. Ser. 5. Vol. xi. 26 
