- 496 - 
OHL^iS, H. (2113) 
1928. FUMIGATION EXPERIMENTS IN GLASSHOUSES «,'ITH VARIOUS NICOTINE 
PREPARATIONS. Gartner-Tidende, reprint, 12 pp., illus. [Abstract 
in Rev. Appl. Ent. (A) 17: 260. 1929.] 
An account is given of a number of experiments in greenhouse.-, 
fumigation in which 14 different nicotine preparations in liquid, 
strip, and powder form were used against aphids, whiteflies, thrips, 
coccids, and nites. 
WHITCOkR, W. D., and GUBA, E. F. (2114) 
1928. CONTROL OF RED SPIDER AND POWDERY MILDEW ON GREENHOUSE CUCUiiBERSJ 
Mass. Agr. Expt. Sta. Bull. 246, pp. 280-294, illus. [Abstract 
in Rev. Appl. Ent. (A) 17; 311-312. 1929.] 
Vmen aphids or thrips are present in connection with red spider, 
the addition of 1 pt. 4G-^ercent nicotine sulphate or 40-percent 
free nicotine liquid in 100 gal. of diluted white oil emulsion will 
control all those pests, and if mildew is present, bordeaux mixture 
or other copper sulphate sprays may safely be mixed with the oii- 
nicotine or with the oil spray. 
HERRI CK, G. W. , and GRISVOLD, G. H. (2115) 
1929. THE FUMIGATION OF GREENHOUSES TO DESTROY INSECT P^STS. Cornell 
Agr.. xjxpt. Sta. Bull. 474, 20 pp., illus. [Abstract in Rev. Appl. 
Ent. (A) 17: 367. 1929.] 
Methods of fumigating greenhouses with nicotine products 
both in liquid and powder forms against aphids are described. 
6. Millipedes and Centipedes, 1917-1925 . 
CORY, E. IT. , and O'NEILL, F. H. (2116) 
1917. THE HOTHOUSE MILLIPED. Md. Agr. Expt. Sta. Bull. 206, 12 pp., 
illus. [Abstract in Rev. Appl. Ent. (A) 5: 4:39-460. 1917.] 
For tha control of the hothouse millipede (pxidus gracilis 
Koch) tobacco dust sprinkled at the rate of 300 lb. per acre - or 
1 02. pur square yard - proved fairly effective, killing about 85 
percent of the millipedes en the beds and about 5 percent under 
the surface. Nicotine (40-percent) ana nicotine sulphate (40- 
percent) also give good results if the soil is well drenched. 
FEYTAUB, J. (2117) 
1920. LE PROCES D'UN MYRIAPODE: LE BLANIULE MOUCHETE. Bull. Soc. iCtude 
Vulg. Zool. Agr. [Bordeaux] 19 (5): 33-35. [Abstract in nev. 
Appl. Ent. (A) 8: 3o9. 1920.] 
The millipede Elaniulus g uttulatus Bose can be cnecKcd by 
sprinkling the soil before sowing with tobacco extract. 
