




REVIEWS. 209 
this class of inquiries, and who discusses them in a way and style equally 
interesting and instructive to the professional naturalist or physiologist, 
and to the general reader. To the intelligent agriculturist and. breeder, 
these volumes will be especially valuable, and it is in the interest of such 
practical men and amateurs that they are here reprinted.” 
Cosmos. (Weekly) Paris.—This journal, besides giving weekly re- 
fu 
ing rural economy ans the application i chemistry to the arts. 
the Editor in chief. The leading article of the present number (dat 
March 21, 1868) is on the general method of the immediate analysis ae 
meteoric stones, Al M. a Meunier, which is succeeded by an ac- 
count of M. M. E my and Terreil’s general method of the immediate 
analysis of erasi pindi 
- Reiset writes on the ravages of the Cockchafer, or ‘‘ Hanneton” 
ree vulgaris), and its larva, the beetle of which in the spring of 
1865 defoliated the oaks and other trees, while immense numbers of their 
æ in cs e succeeding year, 1866, devoured to a fearful extent the roots 
of garden vegetables s, etc., at a loss to the department of the Lower Seine 
Which appeared in such numbers in 1865, passed a second winter, that of 
1867, at a mean depth in the soil of 4% of a metre, or nearly a foot an nd a 
half. The thermometer placed in the ground (which was covered with 
Snow) at se — = never rose to as zero point” as an 
Thus the 1 after ing perfectly f 
ranean iva are thus frozen, pen thaw out in the spring at ‘the nea 
of warm weather). In June, 1867, the grubs having become full-fed, made 
their way upwards to a mean distance of about thirteen inches below the 


et RTERLY JOURNAL or Science. (London.) In the April number 
oa Mayer writes on er claims i Nitro-glycerine as an industrial 
It has 
* By the Centigrade thermometer. 
AMER. 3 NATURALIST, VOL. Ir. 27 
