PITBIICATIONS rOR SALE BY THE BUREAU OF SCIENCE, 
MANILA, PHILIPPINE ISLANDS 
REPORT OP THE IKTERKATIONAE PLAGUE CONFEREJfCE. ' 
Held at Mukden April, 1911, under tlie auspices of 
‘ ’ the Chinese Government. 
Edited hy Ekicn M4 .hti>’i, G. F. Peteie, Aexhur Stanley, anp Hiciiabd 
. P. Steono. 
483 pages, IS plates (2-colored, 4 half-tones, 12 charts and maps); 
Order No. 416. Cloth, $3.50; paper, $2.50 United States currency, postpaid. 
The proceedings of this International Conference and Information gained therefrom, together 
with the results of certain baotenological investigatiems, 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, Germany, Great Britain, 
Italy, Japan, Mexico, the Netherlands, Russia, and China attended the Conference. 
The Bureau of Science of the Government of the Philippine Islands has bean appointed sola 
agent for the distribution of the printed proceedings of the International Plague Conference. 
* THE SUGAR INDUSTRY IN THE ISLAND OP NEGROS. 
By Heebert S. Walkee. 
» ^ 145 pages, 10 plates, 1 map. 
Order No. 43,2. .■!,■■ ■■■■■. Paper, $1.25 United States currency, postpaid. 
Considered from the Viewpoint of practical utility, Mr. Walker’s Sugar Industry in the Island 
of Negros is one of the most important papers published by the Bureau of Science. This volume 
is a real contribution to the subject; it is not a mere compilation, for the author was in the field 
and understands the conditions of which he writes. The following is a brief synopsis of the 
contents: 
Yables 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 cultivation and the production pec hectare are given, and the 
possibility for future expansion discussed. 
The plates illustrate various phases of sugar industry from the oultivation of the field to the 
transportation of sugar in native sailboats. 
, ^ A MANUAL OP PHILIPPINE SILK CULTURE. 
' - By Charles S. Ba^*ks. 
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 little encouragement. 
.In A Manual of Philiopine Slik Culture we have presented the results of several years’ actual 
work with slik-producing larvae together with a description of the new Philippine race. Half-tone 
Plates, illustrate in natural size silkworms in different stages of development, pupae, adult moths, 
samples of cloth made from erl silk, hand reel, and silk house. Other plates illustrate the 
various appliances used in raising silkworms and in spinning silk; hand and power reels are 
Illustrated; working drawings are given for a silk house and for a hand reel. 
