-229- 
(182) HANSBERRY, R., and NORTON, L. B. 
1940* Toxicities of optically active nicotines and nornicotines 
to Aphis rumicis . Jour* Econ. Ent. 33: 734-735* 
(185) HARE. H. A*. CASPARI. C*. Jr., and RUSBY, H. H., ed. 
1916* National standard dispensatory. Ed* 3*, 2081 pp. 
Philadelphia* 
(184) HARGREAVES, E. 
1924* The action of some organic compounds when used as stomach 
poisons for caterpillars* Bui* Ent* Res* 15: 51-56* 
(185) HARRIS. T* W. 
1841* Report on the insects of Massachusetts, injurious to 
vegetation* 459 pp* Cambridge* 
(186) HARRISON. J* E* 
1928* Sheep dip. Austral* Patent 16.258. Aug* 24* [[Abstract 
in Chen* Aba* 24: 1458* 1930 .^ 
(187) HARTMAN, E* 
1931* A preliminary note on one method of destroying the 
nymphs of the litohi stink bug* Lingnan Scl* Jour* 
10: 283-286* 
(188) HARTZELL, A., and WILCOXON, P* 
1941* A survey of plant products for insecticidal properties* 
Boyce Thompson Inst* Contrib* 12: 127-141. 
(189) HARDXAWA, C* 
1932* On the toxic aotion of hanahiri-no-kl and its application 
for the control of yuri-mimisu* Ohara Inst* f* Landw* 
Porsch* Ber* 5 (2)i 311-322* 
(190) HASE, A. 
1916* Der Verbreiter des Fleokflebers* Die Kleiderlaus. 
Deut* Gesell* f* Angew* Ent*. e. V* Merkblatt Nr. 1 
(ser. I) , 8 pp* 
(191) HECTOR, G. P. 
1921-24* Reports of the enonomie botanist* Bengal Dept* Agr* 
Ann* Rpts*: 1920-21, app. V, pp* 33-36 j 1921-22. 
app* V. pp. 37-41 j 1922-23, app. I, [ij-v* 
(192) HENKEL. P* 
1909* Naturgemasse Bekampfung der Sohnaken und Steohmucken* 
Gartens eitung 4t 215-218* 
