34 Recent Literature. [ January, 
and Myriopoda as sub-classes of Tracheata, and consequently 
what have been in former editions regarded as sub-orders are 
called orders. The Thysanura, moreover, are separated from 
the Neuroptera and regarded as a distinct order, comprising syn- 
thetic types with features allying them to the Orthoptera, Neurop- 
tera and Myriopoda. hey are divided into two sub-orders, 
‘Tuomas’ Noxious Insects oF ILiiNois.— This voluminous 
report evinces the activity shown the past year in Illinois as 
regards the prevention and cure of injuries from injurious insects. 
The State entomologist has employed Prof. G. H. French as 
general assistant, Miss Nettie Middleton as office assistant, and 
Miss Emily A. Smith as special assistant for the north-western 
part of the State. Over a hundred pages are devoted by Prof. 
Thomas to insects injurious to corn; an excellent report by Miss 
louse, while the second half of the report is devoted by Prof. 
French to a description of the butterflies and moths, with their 
caterpillars, especially injurious in Illinois.: The volume is weil 
calculated to interest and instruct the people of the West in 
_economic entomology, and, we think, is an improvement on last 
year’s report. i 
LocKYER’S GUILLEMIN’s Forces or. NATURE.?—By its general 
accuracy of statement, simplicity and clearness of style, and the 
excellence of the wood-cuts and full page illustrations, this work 
in its English dress, will commend itself to those naturalists who 
wish to broaden their field of study and to ascertain the nature of 
the environment by which the life of the globe is surrounded. 
From many points of view the naturalist and geologist will need 
to review and utilize his knowledge, or if that be wanting, acquire 
some idea of the physical phenomena of nature. 
the State of Llinois. Secon 
Entomologist. Springfield, 111., 1878,. 8vo, pp. 290. 
e. A popular introduction‘to the study of Physical Phe- 
1 Seventh Report of the State Entomologist on the Nos ious and Beneficial Insects of 
d Annual Report. By Cyrus THomas, Ph.D., State 
oo. nomena, By Amédée Guillemin. Translated from the French by Mrs. NORMAN 
i iti tes í 
_ i} y J. Norman Lockyer, F.R.S. 
Ilusirated by nearly five hundred engravings. London, Macmillan & Co., 1877- 
- 8vo, pp. 725- 13 numbers, one shilling a number, 
