124 THE TUSSEH SILKWORM MOTH. 
which the moth has pierced, and will send for more 
to take down with us. There are none of the 
Palma Christi species of Tusseh to be had here, but 
T have sent for some. I fancy this last is the most 
valuable kind, for the silk piece wove from it is 
uncommonly durable. The head sircar of the fac- 
tory here has an outside cover of a palanquin, which, 
he tells me, has been worn eleven years ; also some 
purdahs, which, he says, have been in constant use 
nine years, and are not much decayed yet. I re- 
member examining the palanquin cover about five 
or six years ago. 
«JT have heard that there is another variation 
of the Tusseh silkworm ‘in the hills near Baugli- 
pore ; its cocoon is said to be smaller than the co- 
coons of the Bughy and Jarroo species; perhaps 
this may be the kind furnished to Doctor Roxburgh 
by Major Hutchinson : but, after all, I confess it may 
he suspected that all the variations are derived from 
the same insect originally, and that they have 
assumed different habits by different modes of cul- 
ture or food. 
* When I return from Calcutta, I shall make 
particular inquiries on the subject. 
* You will observe that the inclosed specimen 
is tinged of a deeper colour than the filament of the 
cocoon ; this they say is from the alkaline ley.’ 
« Mr Atkinson has, since writing the foregoing 
letters, sent me large supplies of the cocoons of both 
