120 How to obtain it. 
tried many experiments, and can produce much better fish, and 
hatch ova with a lower death-rate on glass than I can by any other 
method. I have, therefore, kept to the system, and can speak 
very highly of it. I believe very good work has been done by 
many of the other systems now in use, but where the best results 
are desired by all means use glass. I shall have more to say 
about this in another chapter. 
There are at least three great advantages attaching to the 
use of ova, viz. :— 
(1) They bear packing and transit well. 
(2) They can be sent to any part of the world. 
(3) They cost very little. 
In searching for details relating to the success attending the 
stocking of waters, I find that the use of ova has played a very 
important part in the history of the world’s fish-culture. The 
Chinese have been fish-culturists from time immemorial, and they 
deal extensively in ova, collecting and carrying to market the eggs 
of their fishes, and making them regular marketable commodities. 
The splendid results which have been achieved in New Zealand, 
and also in Australia and Tasmania, are due to the use of ova. 
Trout eggs were sent from this country twenty-five years or more 
ago, and the result is that to-day their waters are in many cases 
stocked with, fish, and it is also a notable fact, that the trout have 
grown in many places to a greater size than is attained in this 
country. Ten to twenty pounds seems to be not an uncommon 
weight for Sa/mo fario in some New Zealand waters, whilst much 
greater weights are occasionally recorded. 
The history of trout-culture at the Antipodes is very instruc- 
tive. About 800 trout ova were successfully hatched in New 
Zealand in 1868, and these ova were obtained from the natural 
spawning grounds in Tasmania. Now, we find that the first 
introduction of trout into Tasmania was effected in the year 1864, 
being only four years previous to the introduction to New Zealand. 
During that year a small number of eggs were sent out from this 
country by Mr. Frank Buckland, Mr. Youl, and Mr. Francis 
Francis, the number being about 2,700 altogether. As a result of 
the importation of trout ova into Tasmania, and their cultivation, 
we find, in four years, that country sending ova, taken from fish 
