58 ILLUSTRATIONS OF INDIAN BOTANY. 
the second all the American forms with distinct seed: and under the third, all those having 
them coherent ; whether downy or smooth, or with 3 or 4-valved capsules. Dr. B. Hamil- 
ton, following Van Rohr employs the seed to furnish his specitic characters, and according 
as they are black or white, reduces all the forms to one or other of two species, distinguished 
by that mark. Our country Cotton, and all its varieties, form his G. album : the American 
ones with black seed, his G. nigrum, among which G. acuminatum is included. The charac- 
ters on which this division is established I consider of no value in themselves, but the divi- 
sion itself, excluding G. acuminatum from his G. nigrum, I think correct. 
n three instances in the above enumeration I have added marks of doubt, indicating there- 
by, that I am still uncertain whether or not they ought to be considered distinct species. Judg- 
ing from Mr. Royle’s description, G. vitifolium seems to be either a hybrid or cross, between 
the Indian and American forms, or G, acuminatum, but.as I have not examined the plant [ 
forbear to offer any opinion. he other two, G. arboreum and G. religiosum are, I believe the 
same plant, though possibly distinct, but I rather think not, since the difference of the 
colour of the flower only, (the one purple the other yellow), gives probability to that suppo- 
er genus. With the view 
! me account of the history and the uses 
of the more valuable plants which fall to be noticed in its progress, to consider briefly the eco- 
nomical applications of the produce of this genus, which, when viewed in all its relations, must 
without any exception, be ranked as the most valuabl 
kingdom. . 
England 361,685,000 pounds of clean 
y high, let us suppose that 350 millions of 
ly, and as a general average, that one acre 
soulin cote . aes So great commercial advant a 
Sees &Soil and climate suited for the growth of the plant, tian - ae of on i 
riage es attracted meh attention in India, in the 
for exportation, to lgpincias ST ary easing. the quantity.of catton crown 
po: n, to compete, in supplying the English market, with America, though the latter 
€ to mankind of the whole vegetable | 
ee a pcm a ae arte Oy AT eit be es ene Ns ‘ee Se det 
