Botany and Zoology. 135 
sous les auspices de M. Le Comte pe Satvanpy, Ministre de I’In- 
struction Publique. Tome Premier. Cosmogonie et Géogenie, Phys- 
ue du Globe, Géographie Physique, Terrain Moderne. 689 pp., 8y 
of years, is of great value to science. The laborers in the field are 
scattered over the whole civilized world, and wir publications are in 
- many langua 
Bes: 
The difficulty of commanding the works hain is especially felt i in 
America, where libraries in science are slowly supplied with European 
publications, ene: the ‘eames of the various learned socie- 
ties of different countries. Mor , few have the time —, to 
study and digest chaveoghly tha publications within rea M. d’Ar- 
has done an invaluable service to ge ologists, in ‘bes labors. 
The work is divided ito chapters and sections. Each chapter con- 
tains a fair and interesting review of the “ig of which it treats, and 
is followed by a list of publications. The following are the subjects 
eated of in this, the first volume: 1. mogony.—2. Geogeny— 
presage cm Surface and Density—2. Interior oo ure of the 
globe.—3. Meteorology.—4. Terrestrial magnetis sr electric cur- 
rents within the earth.5. ‘Physical Geography 6. 0 ography and | : 
Relief of the Coupnéatd —7. Hydrography.—8. Keene poner 
sions.— Third Part: On Modern Deposits and Phenomena upon the 
Earth’s surface—1, Atmospheric and Tarreeical produets. —2. Aque- " 
ous and Glacial products.—8. Lacustrine and Fluviatile Deposits.— 
minous and Salin bers Mineral and Thermal Woetirecad Volean 
Gaedocts, —4, Rarthquakes. —5. Elevations and, Subsidences. 
This volume is to be followed by.a Second on the Diluvial or qua- 
ternary and tertiary strata; a Third on the secondary and interme- 
diary or Transition strata—and a Fourth on Primary rocks, Paleon- 
tolo: Oo of Elevation, Subsidence, Veins, and Metanioi- 
phism, Analysis and Structure of rocks, Artesian wells, Meteorites, 
Selenology, together with a Bibliographical Supplement, .a review o 
the so . statistics of each country, and a list of authors cited 
in the four v 
The aN should be in the hands of all interested in geological ; 
science. é 
ae | Ill. Borany anp Zoonoay. nad 4 
1. Gutta’ Percha.—The tree affording the gutta percha, of whic a # 
imperfect description was given in our last noe BY | 
pig to the new genus Isonandra, of Wight. Wight 
wo species, to which M. i De Candolle has dea two others Bet 
edi to Sideroxylon. W. J. eget calls the species g the 
gutta percha, wacormp gutta, gute 
. . ee eae 
