418 Scientific Intelligence. 
and severe undertaking, requiring the microscopical examination of an 
immense number of specimens, and the patient selection and distribution 
of the elaborated materials by which each set is made so complete. 
This new issue is not a mere reproduction of the former, but is much 
augmented. While that contained a little over 400 species or marked 
h 
cost fully $100 per set or copy. They are sold at $35 in gold, or £7 
sterling, or 175 francs. Each copy is accompanied by an 8vo pamphlet 
of 96 pages,-being a reprint, in convenient form, of all the tickets, charac- 
ters of new forms, and index. Applicants will address Mr. Leo Lesque- 
reux, at Columbus, Ohio. A. G. 
12. Mind in Nature or the Origin of Life and the Mode of Develop- 
ment of Animals; by Prof. H. J. Crarx—A brief notice of this book 
appeared in the last number of this Journal, indicating the nature of the 
work, and some of the leading subjects discussed. To present an ade- 
quate review would require a more extended article than is consistent 
with the space allotted in this Journal. s 
The first five chapters are devoted chiefly to discussions of the various 
modes of reproduction and increase among animals, and the analogous 
phenomena of the regeneration of lost parts, and the persistence of “ VI- 
tality” in decomposing tissues. ‘ 
In the first chapter the curious structure and habits of the lowest Rhi- 
zopods, Ameba, Difflugia, &c., are very clearly presented, showing that 
drop of semi-fluid matter without walls or definite form. 
The subject of spontaneous generation is then discussed, and the recent 
ro eriments, ly, 1862, he 
draws conclusions far broader than their author felt justified in doing, and 
* . . eis ese 
Professor Dana, on page 286. It seems premature, at least, to consider 
pe ho ih generation as actuaily established by such experiments. _ 
t living 
did 
not appear at all, while in other similar ones they a in great num- 
rs. Admitting that the treatment was such as to have utterly destroyed 
