KEVIEWS. 
83 
natural history of parts of the coast of the United States, which are under- 
taken every summer by the officials of the Commission. 
In the Report of the Commissioner of Agriculture for 1875 * we have a 
volume which, although not so interesting throughout to the scientific 
naturalist as that of the Fisheries’ Commission, nevertheless contains several 
important contributions in addition to those of a more purely industrial 
bearing. The entomologist, Dr. Townend Glover, furnishes an account of 
the habits of those species of the Heteropterous Rhynchota, or Bugs, which 
are either injurious or beneficial to man ; Mr. George Vasev, the botanist, 
gives a list of the Forest Trees of the United States, a subject which is 
further illustrated by a long and elaborate report, with maps, on the statistics 
of forestry; the microscopist, Mr. T. Taylor, notices the microscopic ap- 
pearances of cellulose and starch, and contributes a paper on the diseases of 
fungal origin known as “ Cranberry rot and scald ” ; and Mr. J. R. Dodge 
has a long paper on the Sheep and Wool of the World. 
Of the Smithsonian Report for 1876f we need say little more than that, 
besides the formal reports of the progress of the Institution, it contains the 
usual selection of memoirs upon various scientific subjects. Among these, 
translations of Arago’s Eulogy on Gay Lussac, and of a biography of the 
present Emperor of Brazil, will be read with interest ; as also a memoir on 
“ Kinetic Theories of Gravitation,” by Mr. W. D. Taylor, in which the 
author discusses the various speculations that have been put forward on this 
subject. Several original papers on American Ethnology, illustrated with 
figures of pottery, articles of stone and wood, and curious earthworks, are 
also of much interest. 
HUXLEY’S INVERTEBRATA4 
COME twenty years ago, not long after he succeeded the late Professor 
^ Edward Forbes at the School of Mines, Professor Huxley commenced 
the publication, in the “ Medical Times and Gazette,” of a series of lectures 
on Comparative Anatomy, which, to the regret of many students of Zoology, 
came to an untimely end. Subsequently, in 1871, he brought out his well- 
known “ Manual of the Comparative Anatomy of Vertebrated Animals,” 
which is now succeeded by a corresponding volume on the Invertebrata. 
It is hardly necessary to say that this book, which forms a stout little 
volume of some 700 pages, is a most welcome addition to our stock of Zoolo- 
gical literature. The author’s eminence as an original investigator (first 
established by most valuable researches upon several types of invertebrate 
animals), his intimate acquaintance with all the modern literature of the sub- 
ject, his experience as a teacher, and his wonderful power of lucid exposition, — 
all combine to assure us a priori that in his present work we shall have, what 
* u Report of the Commission of Agriculture for the year 1875.” 8vo. 
Washington. Government Printing Office. 1876. 
t u Annual Report of the Board of Regents of the Smithsonian Institution, 
showing the Operations, Expenditures, and Condition of the Institution for 
the year 1876.” 8vo. Washington. 1877. 
% “ A Manual of the Anatomy of Invertebrated Animals.” By Thomas 
H. Huxley, LL.D., F.R.S. Sm. 8vo. London : Churchill. 1877. 
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