into the Rivers of Tasmania. 445 
extremely rapidly, or chemically separating, by evaporation, 
those two gases, which combined form water, and from 
which cause the fish became suffocated. 
5th. Ido not doubt that the white salmon, so termed by 
Mr. J. L. Burnett, might have been conveyed to Van 
Diemen’s Land from the Chinese waters alive, but those 
fish had not to pass the tropics, therefore might be conveyed 
safely from a hot climate to u cooler one, and subject to no 
prostration from excessive heat. 
6th. Upon the view taken I think all the points have 
been examined ; and, for my part, I beg to offer my humble 
thanks to His Excellency Sir William Denison for the 
kind manner in which he has viewed the experiment; also 
for his further recommendation to have a second trial. To 
Mr. J. L. Burnett I haye to offer my grateful acknowledg- 
ments for the interest that he has taken in the subject, and 
for his very lucid report thereon. 
As regards the cost of a second experiment, that would 
depend greatly upon the arrangements, although, I believe, 
if economically undertaken, as far as I should have to 
execute, it would not exceed £105, and a further £105 for 
my professional services and attendance. The cost would 
not include the charges of freight and attendance, &c., on 
shipboard, and of which I can form no estimate myself, not 
being connected in trading affairs. I feel, however, the 
necessity that every economy should be effected in such an 
undertaking, although I consider the value of the success. 
to be beyond all calculation of pecuniary remuneration. 
TI remain, &c., 
GoTTLIEB Boccivs, 
