Vol. II, No. 10.] Notes on the Pollination of Flowers. . sls 
[N.S.] 
64. Notes on me Pollination of pa in India. Note No. 2—The 
pollination of Corchorus in Bengal and Assam.—By I. H. 
BorkILL. 
Emile Lefrance (Ramie and. jute i in the United States, Wash- 
ington, 1873, p. 16) says that “ flies and butterflies keep away 
fro jute fields especially at the blossoming period. The 
etter’ odour “st the flower and the acon exudation - the leaves 
are insects on the wing, jute flowers obtain visitors from a mong 
them, though the visitors are possibly more abundant if there is 
land above flood level in the neighbourhood. 
y work in the years 1902, 1903, 1904 and 1906 has taken 
me to the jntenfields all over Bengal; and as I examined crop 
after crop studying the races in cultivation, it has been a constant 
observation that two or more son may be grown in great proxi- 
mity without becoming one ; the cultivator rarely exercises 
discrimination in his selection “of plants to be left for seed. At 
first I thought that I should be able to show that in the jute dis- 
tricts flower-visiting insects are not present in quantity, but I 
cannot sea hays do that. Instead ths: result of my work i 
to show ja owers do receive a considerable amount of 
attention reel insects well built for effecting abundant cross- 
fertilisation. Why their influence is not distinctly apparent, I am 
as yet in no position to sa, 
ive my obse rvations on Corchorus capsularis first, and 
thereafter those on the somewhat arger-flowered Vorchorus olito- 
H. th 
Corchorus capsularis, Linn. 
- 
In 1902, I visited the Bardwan Experimental Farm on 
August 23th. In 1903, I had a tent pitched beside the jute-plots, 
d was there on August 3rd, September 2nd, 3rd, 9th and 10th, 
In 1904, | visited the Farm on August 10th and September 22nd : 
and in 1906 I was there on September 15th. The first observa- 
tions to be recorded were made during these visits. 
ardwan is outside the real jute area, and there is high 
flower ; and afterwards I found that it does not vary from place 
to plac 
PT The flowers of Corchorus capsularis open about 7-30 a.m. 
