DONATIONS TO LIBRARY. 
vii. 
Second and third Reports of the Geological Survey in Kentucky, made during 
the years 1856 and 1857. By David Dale Owen. Frankfort, Kentucky. 1857. 
2 vols. From the Author. 
Maps and Illustrations referred to in vols. 2 and 3 of the Report of the Geo- 
logical Survey of Kentucky, 1857. From D. D. Owen. 
Descriptions of New Fossils from the coal measures of Missouri and Kansas. 
By B. F. Shumard and G. C, Swallow. St. Louis, 1858. From the Authors. 
The following were presented by H. C. Sorby : 
On the Contorted Stratification of the Drift of the Coast of Yorkshire. By H. 
C. Sorby. Leeds, 1852, 
On the Origin of Slaty-cleavage. By H. C. Sorby. 1853. 
On the Physical Geography of the Tertiary Estuary of the Isle of Wight. By 
H. C. Sorby." Edinburgh, 1857. 
On the Physical Geography of the Old Red Sandstone Sea of the Central Dis- 
trict of Scotland. By H. C. Sorby. Edinburgh, 1856. 
On Yedmandale, as illustrating the Excavation of some Valleys in the Eastern 
part of Yorkshire. By H. C. Sorby. 1854. 
On Slaty-cleavage, as exhibited in the Devonian Limestones of Devonshire. 
By H. C. Sorby. 1856. 
On the Theory of the Origin of Slaty-cleavage. By H. C. Sorby. 1856. 
On the Terraces in the Valley of the Tay, north of Dunkeld. By H. C. Sorby. 
Edinburgh, 1856. 
Geological Survey of the Environs of Philadelphia. By 0. Troost, M. D. 
Philada., 1826. From Mr. S. Powel. 
Introduction to a Course of Lectures on Natural History. By Chas. W. Peale. 
Philada., 1800. From S. Powel. 
20th. Verhandlungen des Vereins zur Beforderung des Gartenbaues in den 
K. Preussischen Staaten. Bd. 3—20, (1826 to 1851) and lief. 42 to 44, (1853.) 
Neue Reihe, 4ter Jahr., 2, 3 lief. From the Union. 
Denkschriften der K. Akad. der Wissenschaften. Mathemat.-Naturwissen. 
Olasse, 13 Bd. From the Academy. 
Sitzungsberichte de K. Akad. der Wissenschaften. Mathemat.-Naturwis. 
Olasse. Bd. 23. 2 heft. ; Bd. 24. Heft. 1—2. From the Academy. 
Zeitschrift fiir die Gesammten Naturwissenschaften. Bd. 7, 8, and heft. 1 — 6 
of Bd. 9. From the Editors, Giebel and Hentz. 
Berichte uber die Verhandlungen der K. Sachs. Gesellschaft der Wissen- 
schaften zu Leipzig. Mathemat.-Phys. Classe. 1857. 1 and 2. From the 
Society. 
Abhandlungen des Naturwissenschaftlichen Vereins fiir Sachsen und Thiirin- 
gen in Halle. 1 Bd. 1 heft. From the Editors, Giebel and Heintz. 
Neues Jahrbuch fiir Mineralogie, Geognosie, Geologic und Petrefakten-kunde. 
1857. 4 heft. From H. G. Brown. 
Archiv fiir Naturgeschichte. 22 Jahr., 6 heft. From the Editor. 
Verslagen en Mededeelingen der Koninklijke Akademies van Wetensschappen. 
Afdeeling Letterkunde. 2 Deel. : 2, 3, 4 Stuk. ; 6 Deel. ; 1, 2, 3 Stuk. From the 
Academy. 
Wiirttembergische Naturwissenschaftliche Jahreshefte. 8 Jahr., 3 heft. ; 11 
Jahr., 3 heft., and Taf. 8 — 13. From the Wurtemberg Natural History Society. 
Oversigt over det Kongelige danska Videnskabernes Selskabs Forhandlinger 
og dets Medlemmers Arbeider i Aaret. 1856. From the Society. 
Beitriige zur Kenntniss der Gefasskryptogamen. Von W. Hofmeister, II. Leip- 
zig, 1857. From the Royal Society of Sciences of Saxony. 
Auseinandersetzung einer Zweckmassigen Methode zur Berechnung der Ab- 
soluten Storungen der Kleinen Planeten. Von P. A. Hansen. From the same. 
il'ber die Thermoelektrischen Eigenschaften des Boracites. Von W. G. Han- 
kel. From the same. 
liber die Messung der Atmospharischen Elektriciliit nach Absoluten Maasse, 
Von W. G. Hankel. From the same. 
