37 
Verzeichnis 
der 
in den Jahren 1918—1921 durch Tausch, Schenkung und 
Kauf erworbenen Bücher. 
I. Durch Tausch gingen ein: 
Nord-Amerika. 
Baltimore: Maryland Geological Survey. Vol. X. 
Brooklyn : Museum of the Institute of Arts and Sciences. 
Science Bulletin. Vol. II, 3—6. Vol. III, 1. 
Buffalo: Bulletin of the Buffalo Society of National Sciences. Vol. XI. 3, 
XIII. 1—2. 
Chicago: The Chicago Academy of Sciences: 
The John Crerar Library Annual Report 1916 — 1920. 
Madison: Publications of the Washburn Observatory. Vol. XIII. 1. 
Milwaukee: Wisconsin Natural History Society. Bulletin. Vol. XIII. 4. 
Public Museum of the City of Milwaukee. 
Bulletin. Vol. II. N. 1, Vol. III. 1. 
Annual Report 28, 29. 
Minneapolis : The University of Minesota: 
Agricultural Experiment Station Bulletin. N. 90 — 93. 
New Haven: Connecticut Academy of Arts and Sciences. 
Transactions. Vol. 25. p. 93 — 209. 
New Y o rk : Academy of Sciences. 
Annals. Vol. XXV. 309—416, Vol. XXVII. p. 245—336, Vol. XXVIII. 
p. 1—200, Vol. XXIX. p. 1—139. 
Ottawa: Publications of the Dominion Observatory. Vol. II. 1 — 15, Vol. III. 
1—12, Vol. IV. 1—22, Vol. V. 1—4. 
Philadelphia: Academy of Natural Sciences. 
Prooeedings. Vol. LXVI. 2—3, Vol. LXVII. 1—3, Vol. LXVIII. 1—3. 
Vol. LXIX. 1—3, Vol. LXXX — LXXXIII. p. 1. 
The Wagner Free Institute of Science. 
Transactions. Vol. 1 — 3, Vol. VII. 3, Vol. IX. p. 1. 2. 
Urb an a: Illinois Biological Monographs. Vol. II. 4. 
Washington: Smithsonian Institution. U. S. N. Museum. 
Miscellaneous Collections. Vol. 62. N. 3 — 5, Vol. 63. 1 — 10, Vol. 64. 
1—5, Vol. 65. 1—14, Vol. 66. 1—18, Vol. 67. 1—6, Vol. 68. 1—12, 
Vol. 69. 1—12, Vol. 70. 1—4, Vol. 71. 1—6, Vol. 72. 1—9. 
i 
