VOL. LXV.] PHILOSOPHICAL TRANSACTIONS. 643 



the water, be cleansed by wiping it with a soft hair pencil, or even with the 

 finger, carefully avoiding to rub or press hard on the anemonies. Should any 

 of thein drop off during this operation, they may be left at liberty, for they 

 will soon, of their own accord, fix themselves to some other place. Should any 

 of them die, which will soon be discovered by the milky colour of the water, 

 and an ofFensive smell on changing it, it must be taken out, and on the first 

 opportunity another of the same species be put in its place ; those of a mode- 

 rate size are the most eligible. 



Explanation of Fig. 9, pl- ' 'i, which represents a group of sea anemonies of the 4th species, 

 adhering to an oyster-shell. N° 1, is a contracted anemony of the natural and middling size ad- 

 hering to the oyster shell. N° 2, Anemonies united to the same tinrnk, compared in the essay to 

 the letter Y. At its basis a little shred appearsreadyto.be torn off, in order to become a new 

 anemony. N° S and 4, Two young anemonies moderately expanded, in the middle of which the 

 moutlis appear. N** 5, An anemony, somewhat more grown, on which the projecting rim appears. 

 N" 6, Eight small anemonies, 2 of which adhere together, as do also 2 others, which however are 

 on the point of being separated by the contraction of the part that unites them. Other small anemo- 

 nies, of different sizes, are seen on the oyster shell. 



XXI. On the Sea-Cow* and the Use made of it. By Molineux Shuldham, Esq. 



p. 249. 



There is nothing in this paper sufficiently interesting for re-publication. 



XXII. The Process of making Ice in the East- Indies. By Sir Robert Barker,'^ 



F. R. S. p. 252. 



This paper contains an account of the method by which ice was made at Alla- 

 habad, Mootegil, and Calcutta, in the East-Indies, lying between 254- and 234- 

 degrees of north latitude. At the latter place Sir R. never heard of any persons 

 having discovered natural ice in the pools or cisterns, or in any waters collected 

 in the roads ; nor has the thermometer been remarked to descend to the freezing 

 point ; and at the former very few only have discovered ice, and that but seldom. 

 But in the process of making ice at these places, it was usual to collect a 

 quantity every morning, before sun-rise, except in some particular kinds of wea- 

 ther, for near 3 months in the year : viz. from December till February. 



The ice-maker belonging to Sir R. at Allahabad, made a sufficient quantity 

 in the winter for the supply of the table during the summer season. The me- 

 thods he pursued were as follow: on a large open plain, 3 or 4 excavations were 

 made, each about 30 feet square and 2 deep ; the bottoms of which were 

 strewed about 8 inches or a foot thick with sugar-cane, or the stems of the large 

 Indian com dried. On this bed were placed in rows, near each other, a number 

 of small, shallow, earthen pans, for containing the water intended to be frozen. 



• Trichechus Rosmams. Linn. f Some time commander in chief of the forces in Indi*. 



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