4332 memorandum by D, Walker. Ogi, 30. 
daries, where all the finest lethidia, chalcedony, cornelian, 
onyx, sardonyx, avate, mocho, dc. are cut in great quan- 
tities, and sold very cheap. 
15. To inquire at Madras concerning the new cochi- 
neal discovered by Dr Anderson, and to preserve and 
send home, the species of grafs on which it feeds. 
16. At Calcutta to preserve good specimens with the 
flower, of all the important plants ot the country, and as 
much of their history as pofsible. § 
1>. To be attentive especially to all the productions of 
China which may be brought there, whether fofsil, vege- 
table, or animal. 
18. To collect at Calcutta, fhells, corals, corallines, 
spinges, and other fine marine productions which are 
brought there from all parts of India. 
19. To collect all the fine insects, wherever they oc- 
‘cur. Fine collections are to be purchased at an easy rate. I 
fhould particularly reeommend preserving them in paper 
books, in preference to preserving them loose, or upon 
pins. The frefh insect may be placed in folds of paper, 
and prefsed for a day or two with a sufficient weight, 
when they will be dry and sufficiently prepared ; even 
those which have been preserved on pins, when put for 
two minutes in spirits, may then be prefsed and dryed in 
the same manner. 
20. To inquire particularly at Calcutta concerning the 
great quadruped, called by the Englith, a bufalo, but by 
the natives the arnee*. It does not come lower upon the 
Ganges, than’ about the plain of Plafsey. It is said to be . 
about fourteen feet high, and is a superb animal, whose 
* See an account of this animal Bee vol, xii, p. 193. 
