a 
284 Miscellaneous Bibliography. 
the westward. They contain not less than 80 separate beds of lime- 
stone. No additional evidence appears to have been obtained in regard 
to the age of the gypsum-bearing strata immediately above the Permian, 
and none relating to the more recent formations. 
The report, contains a chapter on economical geology, which, with the 
separate nee ecaietotiea furnishes much information of value to all 
interested in Ka 
First pe “icon of the Geological Survey of Iowa; by C. A. 
Wurre, M.D., State Geologist. 4 pp., 8vo. Des Moiues, 1867.—This Re- 
port is merely a preliminary notice of the organization and commence- 
ment of the present survey during the past year. A brief Report by 
te State Chemist, Prof. Hinrichs, is appende 
of the Progress of the Geological Survey of Ni Fas Caer 
rof. W 
port 
= 1866; by P . C. Kerr, State Geologist. 56 pp., 
leigh, 1867,—A brief Report, containing some information on A§ ibe 
of the State, but mainly pace ki - showing that its geological explo- 
ration is begun again in good earn 
eological Survey of Canady ‘Sir Wu. E. Loean, Director. Re- 
port of Geo from 1863 to 1866. 322 pp.» large 8vo. Ottawa, 
1866.—This Report reached us ioe late for a notice in this place 
Co y. Report of the American Bureau of Mines. 36 to, with 
maps.—This important report is based mainly on the investigations of 
D Goessma oessmann obtained for the composition of 
0°7825, one of magnesium 0°0030, chi. of calcium 0° 0036, moisture 
0°3286— 
6. Plan e Problems in Elementary Geometry: or Problems on the 
Btementar Conic Sections, the Point, Straight line, and Circle; by 
rp Warrey, C.E., Prof, of pool th Geometry, etc., in the Rens- 
selaer Belvischais Tnstitate, 162 12mo, with ‘ pia ate and numerous 
ence especially to those of New and, 
8. Description of Fossil aR pe the ( Chinese Coal-bearing rocks ; 
3 by J. S. "Meee M.D., sit a No. 1 of oe Researches 
referred to ic ey in his paper in this ‘ocak al at p. 151. 
usée Teper: cae systématique de Ja Collection Paléonto- 
logique, pa C, Wix triéme Livrai son. Harle em, Lage 
ace 
