420 Scientific Intelligence. 
22. Palzobromelia, ein neues fossiles Soe 2 Von Dr. 
C. von ErrINGsHAUSEN. ten, 1852. Fol., wit 
23. Beitrag zur Flora der Wealdenperiode. Von Dr. C. v. Errines- 
HAUSEN. Wien, 1852. Fol., with 5 pl. (Id. 
24. Die fossilen Mollusken "des Tertiirbeckens von Wien, unter der 
Mitwirkung von P. Parrscu, bearbeitet von Dr. M. Hornes. Nos. 1 
to 4. Wien, 1851-52. Fol., with 20 plate 
25. The Ancient Fauna of Nebraska, or eénsorite of remains of 
extinct Mammalia and Chelonia, from the Mauvaises terres of Nebraska. 
By J. Leipy. Washington, 1853. 4to, with 24 pl. (From the Smith- 
sonian Contrib. to Knowledge. : 
= pies abs, of an extinct species of American Lion, Felis atrox. 
. A memoir on the extinct Dicotyline of America; by Jos. Lrrpy. 
Piilaetpiag 1852. 4to, with 4 plates. (From the Transact. of the 
Amer. Phil. Soc., vol. 10.) 
28. Allgemeine Pilescisiogie: Entwurf einer systematischen Dars- 
tellung der Fauna u. Flora der Vorwelt. Von C.G.Gieset. Leipzig, : 
1852. 8vo. 
29. Untersuchungen an Schadeln des gemeinen Landbiren als krit- 
ische Beleuchtung der Streitfrage iber die Arten fossiler Hohlenbaren. 
Von Dr. A. Tu. v. Mippenporrr. St. Petersburg, 1851. 8vo. 
30. Ueber die Reptilien u. Saugthiere der verscheidenen dae g der 
Erde. Von Herm. v. Meyer. Frankfurt, 1852. S8vo. 
31. Sur le gisement et sur l’exploration de lor en Australia ; a M. 
Detesss. 28 pp. 8vo. Extr. des Ann. des Mines, 1859, iii, 185. 
32. Sur les a des Roches Granitiques; by M. A. DELEssE. 
18 pp. 8vyo. Enxtr. du Bull. Soc. Geol. de France, [2] ix, 464. 1852. 
33. Recherches sur les Roches Globuleuses ; par M. Dexesse. 62 
pp. 4to, with 4 plates. Extr, Mem. Soc. Geol. de France, Abe we 
€ propose to give an abstract of this memoir in our nex mber. 
34. Uber der orographische und geologische structur pi Gruppe 
des Monte Rosa. Vou ERM. SCHLAGINTWEIT. 20 pp. 4to, with 2 plates. 
Leipzig, 1853.—Aus “ Neue Untersuchungen iiber die physicalische 
eographie und die Geologie der Alpen,” von ApoLpH ScHLaGINT- 
weit und Herm. Scanacintweir. 
. On the Production fi Gold in the wes a ; by J. Cat- 
VERT, a7, (Phe Brit. Assoc., 1853, fr. Athen., 1104.)—From his own ex- 
ploration, from rese eral in viitioud works, a from communications, 
Mr. Calvert stated that gold was found in forty counties in the British 
islands, and over an area o square miles. He thus classified 
the gold regions :—The West of England, North Welsh, Mid: Eoglene, 
of Northumbrian, Lowland, Highland, Uluter, and Lainater. The W 
England region might be divided into three districts—Cornwall, Dart 
moor and Exmouth, or West Somerset. In Cornwall, the tin-streams 
which were of the same composition as gold-diggings, had long been 
known to contain nuggets and coarse dust, or hops of gold, but had only 
been slightly worked by Sir Christopher Hawkins, at Ladoch. The 
largest Cornish nugget was not worth more that about ten guineas. 
Corn ish districts were very rich in gold. The Dartmoor district 
"gold i in its northern and southern streams. A miner, named 
