Transactions of the Geological Society of France. 295 
This likewise furnishes the key to the differences between the 
numbers of the theoretical and descriptive publications made in the 
different countries. 
The works and memoirs for 1833, may be divided and arranged 
as follows :— 
Treatises. Memoirs. Total. 
Astronomy, - - - 10 10 20 
Physics, - ~ - - 3 20 23 
Magnetism, - - - 2 38 40 
Meteorology, - - - 12 43 59 
Chemistry, - - - 5) 42 AT 
Hydrography, - - - 2 13 15 
Mineral Waters, - - 22 Q1 43 
Artesian Wells, - - aS 15 18 
Natural History, - - 2g 4\ 70 
Mineralogy, - - - 24 29 53 
Physical Geography, - 32 11 43 
Treatises on Geology, - - 15 8 23 
Particular subjects of Geology, 3 22 25 
Memoirs on Volcanoes, - 2 2 14 
Veins, - - 5 5 
Craters of elevation, 16 16 
——_  —— Elevations, - - 14 14 
Geological Geography, - 22 208 230 
Maps, - - - 31 
Sections, - 28 
Levelings, - - - =) WI 13 14 
General Paleontology, - - 3 1 4 
Fossil remains of Man, - - 2 P. 
Mammifere, 2 22 24 
Caverns with bones, - al 10 11 
Fossil Reptiles, - - 1 6 a 
Fishes, - - - 1 7 8 
Crustaceous Fossils, - eatin 5 6 
Molluscous, = - - - D 17 22 
Fossil Plants, - - - A 11 15 
There have appeared then, in the physical and natural sciences, 
144 treatises and 276 memoirs, in the whole; and in geology and 
paleontology, 61 treatises and 414 memoirs, or in the whole 205 
treatises and 690 memoirs, or 895 publications. 
