CONTENTS 
No. 1, January, 1922 
[Issued April 3, 1922.] 
Yap, §. E., and Pinepa, E. VY. Two interesting cases of ectrosyn- 
dactyly 
Six plates. 
DEL ROSARIO, MARIANO V., and VALENZUELA, PATROCINIO. Commer- 
cial acetylsalicylic acid 
SMITH, WARREN D. Geologic reconnaissance of the Pidatan oil field, 
Cotabato Province, Mindanao ................... Sareea AG i a ee 
Two plates and three text figures. 
Wetis, A. H., and Perkins, G. A. Recent improvements in nipa- 
sugar manufacture 
Three plates. 
SCHENCK, Husert G. Drainage control by jointing in Angat dis- 
trict, Bulacan Province, Philippine Islands 
3 Two plates. 
KieFrFrer, J. J. Philippine Serphidae (Proctotrupidae) ..........-.....-.-- 
Cote, Howarp IrviNG. Identification of ambergris 
Muir, F. New Malayan Cixiidae (Homoptera) ........ 
Two plates. 
No. 2, February, 1922 
[Issued May 24, 1922.] 
Lee, H. ATHERTON, and SHINO, ARIKUNI. Citrus-canker control ex- 
periments in Japan ... 
Four plates and one text figure. 
KLEINE, R. Neue Brenthiden von den Philippinen und Borneo ........ 
Eine Tafel. 
TRELEASE, SAM F. Foliar transpiring power of the coconut................ 
One text figure. 
Letva, LAMBERTO. The cultivation of Leishmania infantum and Lep- 
tomonas ctenocephali on the triple-N medium aspiticolaies Voce sec Socantiny 
BRILL, HARVEY C., and BRowN, ROBERT E. The digestive properties 
of Philippine papain 
Three text figures. 
DICKERSON, Roy E. Review of Philippine paleontology .................... 
Sixteen plates. 
Page. 
15 
23 
45 
57 
65 
105 
111 
121 
153 
167 
179 
185 
195 
