22 BULLETIN S07, TJ. S. DEPARTMENT OF AGBICUI/TUBE. 
Germination of seed a year or more old is only slightly less than 
that of new seed. 
There are no natural enemies of the broad-bean weevil of any con- 
sequence in America. 
It requires 170 r to 150 r F. for over half an hour to kill all of the 
weevils in broad beans. 
Sulphur is unsatisfactory as a fumigant. 
Carbon disulphid at the rate of 7 pounds per 1.000 cubic feet m 
a tight box for 24 hours kills all the weevils. 
In seed held over until the second year all the weevils are dead. 
Beans from crops planted late, after March 1. are much less in- 
fested than those planted earlier, from Xovember to March. 
LITERATURE CITED. 
(1) Cubits. John. 
I860. Farm insects. London. 
I 2 i Chittenden. F. H. 
1911. Notes on various track-crop insects. F. S. Dept. Agr., Bur. EnL 
Bui. S2, pt. 7. 
(3) . 
1912. The broad-bean weevil. F. S. Dept. Agr.. Bur. Ent. Bui. 96. pt. 5. 
(4) F. S. Department or Agbict:eti.-re. BrBEAr oe Chemistey. 
1915. Service and regulatory announcements. No. 14. item 131. Au- 
gust IS. 
(5) . 
1915. Service and regulatory announcements. No. 15. item 151. No- 
vember 4. 
(6) Hinds. TV. E. 
1917. Carbon disulphid as an insecticide. F. S. Dept. Agr.. Farmers* 
Bui. 799. 
(7) Back.. E. A., and Dtckett. A. B. 
191S. Bean and pea weevils. F. S. Dept. Agr., Farmers' Bui. 9S3. 
(8) McKee. Boeand. 
1918. Horse beans. F. S. Dept. Agr.. Farmers' Bui. 969. 
(9) F. S. Department or Agbictetuee, BrBEAr or Chemistey. 
191S. Service and regulatory announcements. Supplement No. 35, items 
5246, 5248. February 21. 
