The Philippine journal of science . e should be addressed to the Business Manager, Philippine Journal of Science,Manila, P. I. FOREIGN AGENTS. THE MACMILLAN COMPAITy, 64-66 Fifth Avenue, New WM. WESLEY & SON, 28 Essex Street, Strand, London, W. NIJHOFF, Nobelstraat 18, s Gravenhage, MAYEB & MtTLLEB, Prinz Louis Ferdinandstrasse 2, Berlin, N. KELLY & WALSH, LIMITED, 32 Baffles Place, Singapore, S. A. M. & J. FERGUSON, 19 Baillie Street, Colombo, Ceylon. (Entered at tlie post- office at Manila, F. 1., as second-class matter.) A limited


The Philippine journal of science . e should be addressed to the Business Manager, Philippine Journal of Science,Manila, P. I. FOREIGN AGENTS. THE MACMILLAN COMPAITy, 64-66 Fifth Avenue, New WM. WESLEY & SON, 28 Essex Street, Strand, London, W. NIJHOFF, Nobelstraat 18, s Gravenhage, MAYEB & MtTLLEB, Prinz Louis Ferdinandstrasse 2, Berlin, N. KELLY & WALSH, LIMITED, 32 Baffles Place, Singapore, S. A. M. & J. FERGUSON, 19 Baillie Street, Colombo, Ceylon. (Entered at tlie post- office at Manila, F. 1., as second-class matter.) A limited number of unbound copies of previous volumesare available Avhich may be secured from the Director ofPrinting at the following rates: Volume I, igo6 (not dividedinto sections), $5, United States currency; Supplement to Vol-ume I, $, United States currency; Volume I (withoutsupplement), $3, United States currency; all later volumesat current subscription prices. tn Vol. IV SEPTEMBER, 1909 THE PHILIPPINE No. 5 149. JOURNAL OF SCIENCE EDITED BY PAUL C. FREER, M. D., Ph. CO-EDITOR, RICHARD p. STRONG, Ph. B., M, WITH THE COOPEEATION OF MERTON L. MILLER, Ph. D. ; GEORGE F. RICHMOND, M. S. W. D. SMITH, Ph. D.; ALVIN J. COX, Ph. D. RAYMOND F. BACON, Ph. D.; CHARLES S. BANKS, M. S. H. D. GIBBS. B. S.; R. C. McGREGOR, A. B, PUBLISHED BY THE BUREAU OF SCIENCE OF THE GOVERNMENT OF THE PHILIPPINE ISLANDS A. GENERAL SCIENCE


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1906