PtTBIICATIONS FOE SAIE BY THE BTTEEAH OF SCIEITCE. 
MANILA, PHILIPPINE ISLANDS 
REPORT OF THE rNTERSTATIOJfAIj PLAGTTE CONFERENCE. 
Held at Mukden, April, 1911, under the auspices of 
the Chinese Governmout. - ; . 
Edited by Ebich Maetini, G. F. Peteie, Akthdb Stanley, and Richaed 
, , : P/ Strong., 
4JSJ pagte, IS plates (2 colored, 4 haif.tonss, 12 charts and maps). 
Order No. 416. Cloth, $350; Paper, $2.50 United States currency, postpaid. 
The proceedings of this Intemationar Conference and information gained therefrom, together 
with the results of Certain bacteriological Investigations, constitute the present report. 
Nothing hitherto has been published which gives such A complete and comprehensive account 
of the entire subject of pneumonic plague. • 
Delegates from America (United States of), Austria-Hungary, France, Germapy, Great Britain, 
Italy, Japan, MeKico, the Netherlands, Russia, and China attended the Conference. 
The Bureau of Science Of the Government of the Philippine Islands has been appointed sole 
agent for the distribution of the printed proceedings of the International, Plague Conference. 
THE SUGAR INDUSTRY IN THE ISLAND OF NEGROS. 
By Herbert S. Walkes. 
145 pages, 10 plates, 1 map. 
Order No. 412. Paper, $1.25 United States currency, postpaid. 
Considered from the viewpoint pf praDtlCal utility, Mr. Walkeris Sugar Industry in . the Island 
of Negros is one of the most important papers published by the Bureau of Soienoe. This volume 
is a real contribution to the subject; it is not a mere compUation; for the author was in the field 
and understands the conditions of which he writes, , The fcllowing is a brief synopsis of the. 
contents: . ' j u 
Tables of soil analyses, both Chemical and physical; analyses of the cane, juice and bagasse; 
estimates based on actual information as to the costs of production and of cultivation; and esti- 
mates of the cost and location of possible Central factories. The Island Is considered by sugar- 
producing districts; the area of Cultlvatiort and the production per hectare are given, and the 
possibility for future expansion discussed. 
The plates illustrate various phases of sugar Industry from the cultivation of the field to the 
transporlation.of sugar in native sailboats. 
A MANUAL OF PHILIPPINE SILK CULTURE. 
53 pages, 20 plates. 
Order No, 413. Paper, $0.75 United States currency, postpaid. 
The silk industry is particularly adapted to be undertaken by persons with small capital, and 
like the making of hats in the Philippine Islands it should thrive with a liUlo encouragement. 
In A Manual of PhiliDpine Silk Culture we have presented the results of several years’ actual 
work with silk-producing larvae together With a description of the now Philippine race. Half-tone 
plates illustrate in natural size silkworms in different stages of development, pupae, adult moths, 
samples of cloth made from er! silk, hand reel, and silk house. Other plates iljustrato Iha 
various appliarices used In raising silkworms and in epinnlng silk; hand and power reels are 
Illustrated; working drawings are given for a silk house and for a hand reel. 
