258 APPENDIX. 



The ova were laid in a hatching-box in stream 

 c?, between the two gates ; and by means of the 

 channel e, and a proper use of the upper gate, the 

 quantity of water could be so regulated as not to 

 injure the ova. As the fish were hatched, they 

 were let into the pond, and there kept and fed 

 until of sufficient size to be entrusted to the perils 

 of river life. 



There can be no doubt at this moment, 1863, 

 the grayling is firmly established in the Clyde, and 

 that in a few years it will be found in most of the 

 principal streams, thus materially adding to the 

 angling resources of the country. 



SALMON IN HANOVER SQUARE. 



Page 217. 



A ludicrous incident once took place with some 

 of my young fish. On one occasion, when I had 

 the honour of reading a paper on the subject before 

 the Zoological Society, and after I and everybody 

 had had our say expressed our ideas, our fears, 

 and our hopes on the subject I proceeded to put a 

 young trout under the microscope. When, how- 

 ever, I came to look at the fish, they were getting 

 very faint, for the room was too hot for them. 

 They were placed (some dozen of them) in a glass 

 dish, in order that they might be easily seen by all. 

 I therefore put away the microscope, not wishing 

 to lose any of the fish, and gave the dish, with the 

 fish in it, to my servant, telling him to go off imme- 

 diately in a cab, and put them back in the cold 

 fresh water of the hatching apparatus. Away he 



