292 Bibliography. 
5. Annales de L’ Observatoire Physique Central de Russie, sige > 
by order of his minjomy the Emperor Nieolas I, by A. T. Kuprrer. No, 
» for 1848, 606 pp? 4to; No. 2, for 1848, 182 and 260 pp., with 
plates ; No. 3, for 1848, 104 PP. A plaies. St. Petersburg, 1851. 
E 
At Fellin, lat. 58° 22’ N., long. 43° 18’ E. from Ferro, the mean tem- 
een of - months for pene was as follows in Reaumur’s scale :— 
Jarch. April. Angust. 
5°48 Bren ois +420 ete 69. it: ‘Si +12 69 -+-10°68 4651 42°09 -l 188 Lis 
The mean seep eg of the year was +3°-20. The winds were 
from ther north 85 days, northeast 7, east 50, southeast 40, south 46, 
southwest 101, west 72, northwes' t 14, The southwest wind biew for 
11 days in October, 10 in each sadild July and August, 8 to 9 in 
June, September, November, December, 7 in February, ‘March, April; 
5 in May. The northwest, blew 1 day in each month except May and 
June, whick blew 2 days; the southeast, 2 to4 days each month through 
the warmer half year, and 3 to 5 each through the colder half year. 
6. Compte-Rendu eciel addressé a M. e Comte Wrontchenko, 
Ministre des bee sates par le Directeur dev Observatoiré Physique Cen- 
tral, A. T. Kuprrer. Année, 1850, 24 pp. 4to. St. Petersburg, 1851. 
7. Journal se Conchyliologie comprenant Vetude des Animauz, des 
Cutten: Vivantes et des Coquilles Fossiles. Publié sous la Direction 
de M. Perir pe La Saussaye. Paris.—This important Journal is a 
quarterly, and was begun in 1850. The volume for that year contains 
pages with 15 plates, colored or uncolored, and includes descri rip- 
tions of new species, anatomical details &e., by men of eminence in 
the science. Price 18fr. Address M. Petit de la Saussaye, Rue 
Considerazioni sulla Geologia della Toscana dei Professori Cav. 
Pails Savi e G. Mene eghint. ‘246 pp. 8vo., with 1 plate ‘of sections. 
Firenze (Florence), 1851. The distinguished authors of the Geology 
of Tuscany, Professors Savi and Mrn NEGHINI, aim in their work to pre- 
sent together the geological notices of the structure of Tuscany hitherto 
published, especially the results of Murchison in his classical work, an 
also to fill out whatsis unfinished in the investigations of this geologist. 
The rocks described are, beginning with the uppermost, as maine’ 
1. Macigno (sandstone) and Calcareous Alberese. 
2. Nummulitic limestone and upper Galestrini schist 
3. Argillaceous schist, called lower Galestrini schist and compact 
limestone. 
4. Dark gray limestone, with flint or hornstone. 
8. Dark gray limestone without hornstone. 
9. Quartzose Anagenite and schist of Verrucan 
These rocks are described in order, and ‘ak geological age dis 
cussed. The following are the epochs assigned to them :— | 
1. Eocene Tertiary ; 2. Lower Eocene; 3. Upper ( Cretaceous § a 
Cretaceous; 5 and 6. Jurassic ; ec Lisphie or ‘Triassic 8 and 95 aoe 
part at least Carboniferous. 
niece ipiient the fossils, s. among which are many new species 
occupy about 140 pages of the 
