- 130 - 
33, BOLUS, II . 
1369. Contributions to Couth African Botany. — Part IV. Jour, 
Linn. Soc. Bet. 25: 156-210. 
34. BOOTH STEAMSHIP CO. , LTD. , and l/'AED,. H. C. 
1935. Improvements in or relating to the extract ion of toxins 
from roots for the manufacture of insecticides. British 
Patent 437,171; issued Oct. 24, 1935; applied for 
March 30, 1935. 
1936. Pcrf ectionnemonts a l 1 extraction des toxines, pour 
la fabrication d 1 insecticides, de racines. French 
Fatent 794,206; issued February 11, 1935: applied 
for August 27, 1935; in England Kerch 30, 1935. 
36. 30LRJE, A. I., and BOYD, 0. 3. 
1937. Pest control in the homr gr-rden. ulass. Agr. Coll. Ext. 
Leaflet No. 171. 12 pp. July. 
57. 3QYCE, a. LI. 
1936. The citrus red mite Derate tranyenv s citri I.'cG-. in 
California, and its control. Jour. Icon. Ent. 29: 
125-130. 
38. 
1936. ijew develooments ir insecticides. Pacific Rural Press 
52 (12): 294, 293. 
39. BOYD, W. M. 
1937. Rotenone in household insect control. Soap 13 (6): 125, 129, 
40. BEAMCN, L. W. 
1936. Adding sulphur to Mexican bean beetle insecticides 
controls powdery mildew on beans. U. S. Dept, Agr. , 
Bur. Bat. and Plant Quarantine T.e™s Letter 3(1): 19, 
mimeo. 
41. 
1936. Fluorine compounds effective agairst corn earworms on 
lima beans. U. S. Dent. Agr., Bur. Ent. and Plant 
Quarantine "Jews Letter 3 (4): 14, mimeo. 
42. 
1936. Calcium arsenate proves toxic to r-\vrt potato leaf 
beetle. U. S. Dept. Agr. , Bur. Ent. and Flant 
Quarantine Dews Letter 3 (9): 21, mimeo. 
43. 
1937. Rotenone-containir.g dust mixtures and sprays give good 
control of Mexican bean beetle. U. S. Dept. Agr. , 3ur. 
Ent. and Plant Quarantine News Letter 4 (4): 20, mimeo. 
