Baltimore. Johns Hopkins University: 
— — American Chemical Journal, vol. 26, No 4—6; vol. 27, No 1—6. 
— — American Journal of Mathematics, vol. XXIV, numb. 1. 
— — Circulars, vol. XXI, No 156—159; vol. XXII, No 160. 
— Maryland Geological Survey. Vol. IV. 
— Peabody Institute: 
— — 35. Annual Report, 1902. 
Basel. Naturforschende Gesellschaft: 
— -—- Verhandlungen, Band XIII, Heft 3. 
— — Zur Erinnerung an Tycho Brahe, 1546 —1601. 
Batavia. Magnetisch en meteorologisch Observatorium: 
— — Observations, vol. XXIII, 1900. 
— — Regenwaarnemingen in Nederlands-Indié, Jaargang 23, 1901. 
— Natuurkundige Vereeniging in Nederlands-Indié: 
— — Natuurkundig Tijdschrift voor Nederlandsch Indié, deel LXI (serie 10, 
deel V). (Druckort Amsterdam.) 
Belgrad. Institut géologique. 
— — Zapisnici, 1900, godina IX, broj 4; godina X, broj 5—7; — 1901, 
godina XI, broj 1—7. 
— K6nigl. Akademie der Wissenschaften: 
— — Glas, LIX, LXIII, LXIV. 
— — Godiénjak, XIV, 1900. 
— — Jezera Makedonije srbije i Epira. 
Bergen. Bergens Museum: 
Aarbog for 1901, hefte 2; for 1902, hefte 1—3. 
— — Aarsberetning, 1902. 
-— — An Account of the Crustacea of Norway, vol. IV, part V—XIV. 
Berkeley. College of Agriculture (University of California): 
— — Bulletin, No. 131—139. 
— University of California: 
— -— Annual Report of the Secretary to the Board of Regents for 1900. 
—  — Bulletin, new series, vol. II, No. 4; vol. III, No. 1. 
— — Bulletin of the Departement of Geology, vol. 2, No 8—12. 
— — Chronicle vol. IV, Nr. 1—6. 
— — Flora of Western Middle California, by W. L. Jepson. 
— — The French Revolution and ModernFrench Socialism, by J. B. Peixotto-. 
Berlin. Berliner entomologischer Verein: 
— — Berliner entomologische Zeitschrift, Band 47, Heft I—IV. 
— Berliner medizinische Gesellschaft: 
— — Verhandlungen, Band XXXIII, 1902. 
— Deutsche chemische Gesellschaft: 
— — Berichte der deutschen chemischen Gesellschaft, Jahrgang XXXV, 
No 6—20; Jahrgang XXXVI, No 1—5. 
— —- Chemisches Zentralblatt, Jahrgang 73, 1902, Band I, No 1—25, 
Band II, No 1—26; Jahrgang 74, 1903, Band I, No 1—14. 
