iv Contents 
No. 3, September, 1921 
[Issued December 19, 1921.] 
MAXWELL, J. PRESTON. Filariasis in China..............................-....--. 
Twenty-five plates and four text figures, 
MERRILL, ELMER D. A review of the new species of plants proposed 
DYN... -Barame in: his Flora liidiea...30...000 Ss 
No. 4, October, 1921 
[Issued January 16, 1922.] 
REINKING, O. A., and Grorr, G. W. The Kao Pan seedless Siamese 
pommelo” and ite cultwve. se 
Sixteen plates and one text figure. 
GEBIEN, HANS. Philippine Tenebrionidew, II................................. 
Two plates. 
BANKS, CHARLES S. A Philippine nemestrinid Ceere ys... 
One plate. 
No. 5, November, 1921 
[Issued February 15, 1922.] 
HELLER, K.M. New Philippine Coleoptera... 
Three plates. 
No, 6, December, 1921 
[Issued March 20, 1922.] 
LANTIN, PEDRO T. Various methods of serum application in bacillary 
dysentery io os 
Six text figures. 
PERKINS, GRANVILLE A. Unsymmetrical addition to the double bond, 
I: A theory of the reaction mechanism of the direct union........ 
Six text figures. 
GROVES, JAMES. Charophyta from Annam and Guam 
ett ete tte Teer erry 
RoHWER, S. A. The Philippine wasps of the subfamily Sphecine.... 
MERRILL, ELMER D. Two new species of plants from Hainan... ee 
Cote, Howarp IrRvinG. The dissociation of hexaphenylethane from 
the viewpoint of the octet theory of valence. 
McGrecor, RicHARD C. New or noteworthy Philippine birds, IV.... 
Four plates and three text figures. 
BECKER, WILHELM. Die Violen der Philippinen 
OxKAmoTo, Kikuo. Secondary sexual characters in the loach Misgur- 
nus anguillicaudatus Cantor. 
One plate. 
Saree eee rene tema eweaeeeneee 
PERKINS, GRANVILLE A. The structure of chlorine dioxide and relat- 
Oe vornpounds oo 
389 
439 
523 
629 
723 
729 
