76 



the pressure of the unsubmerged portion forcing the oil out. A few 

 cups of oil must be added occasionally. In some instances this 

 device was effective for 2 and 3 weeks without renewal of oil. 



The automatic oil-bubbler is devised to permit it to be completely 

 submerged, the oil being allowed to come up in bubbles. The best 

 size is a can of 2 or 3 gallons capacity. Two spigots are fitted to the 

 top, one serving as an oil outlet and the other as a water inlet. The 

 spigot serving as a water inlet has a |-1 inch pipe attached that 

 extends almost to the bottom of the can and it is the difference between 

 the weight of the column of water in this pipe and an equal length 

 column of oil that causes the flow. A third spigot allows the water 

 to be drained from the can when all the oil has been replaced. 



White (M. J.). Oiling by Capillarity and by Oil-soaked Sawdust in 

 Mosquito-Control Work. — Military Surgeon, Washington, D.C., 

 xliv, no. 1, January 1919, pp. 103-104, 6 figs. 



For continuous oiUng the capillarity oiler is used. This is made 

 of an old tin can suspended from a stake and provided with a wick 

 of 6-ply jute binder twine, one end of which is fastened inside the 

 can while the other hangs in the water. To retard the flow of oil 

 the stream is obstructed by a float, which is an inch-square stick held 

 in place by two stakes inclined downstream so as to permit rise and 

 fall. Oil-soaked sawdust is distributed by sowing so that each particle 

 acts as an oiling focus. For temporary collections of water such as 

 are found in cart tracts and hoof-prints, such sawdust is very useful. 



SwELLENGREBEL (N. H. ). Beschrijving van drie nog niet of onvoldoende 

 bekende Larven van Ned.-Ind. Anophelinen. [A Description of 

 Three as yet unknown or imperfectly known Larvae of Anophelines 

 of the Dutch East Indies.] — Geneeskundig Tijdschr. Nederlandsch- 

 Indie, Batavia, Iviii, no. 3, 1918, pp. 398-400. 



The larvae of Anopheles (Myzorhynchus) alhotaeniatus, A. {Myzo- 

 myia) aconitus and A. {N eomyzomyia) leucosphyrus are described. 

 The flrst occurs in slow-running water containing little vegetation 

 and many dead leaves ; the second, which chiefly differs from 

 the larva of A. (Myzomyia) minimus in the presence of shorter fila- 

 ments on the palmate hairs, is mostly found in running water ; the 

 third occurs in small pools in primeval forests and nipa palm plantations 

 near the coast, but always in fresh water. 



Mangkoewinoto (R. M. M.). Anophelinen van West-Java. [Anophe- 

 lines from West Java.] — Geneeskundig Tijdschr. Nederlandsch- 

 Indie, Batavia, Iviii, no. 4, 1918, pp. 462-498, 2 plates. 



The imagines and larvae of the following AnopheUnes taken 

 in West Java are described with a view to facilitating their identifica- 

 tion : — Anopheles {Myzorhynchus) umbrosus, A. (M.) barhirostris, 

 A. {M.) albotaeniatus, A. (M.) sinensis, A. {Nyssorrhynchus)fuliginosus, 

 A. {N.) jamesi, A. {N.) schUffneri, A. {N.) maculatus, A. {Myzomyia) 

 aconitus albirostris, A. {M.) ludlowi {vagus), A. {M.) rossi, A. {M.) 

 rossi indefinitus, A. {N eomyzomyia) punctulatus, A. {N.) leucosphyrus, 

 A. {Cellia) kochi and A. (Stethomyia) aitkeni. 



