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Part III. — Eighth Annual Beport 
Clupea alosa. — A large specimen of the Alice Shad, 24 inches long 
and weighing 6 lbs. was caught on 28th April 1890 in a salmon-net near 
Peterhead. 
5. Experiments m the Cross- fertilisation of different species of Fish. 
I instructed Mr Thomas Scott, while carrying on his work on board the 
1 Garland,' to take such opportunities as offered to test the effect of the 
influence of the milt of one species on the ova of others. These experi- 
ments are of much interest in relation to the question of hybridism. 
(1) Gurnard and Whiting. — Mr Scott fertilised the ova of Trigla 
gurnardiM, belonging to the family Cottidse, with the milt of Gadus 
merlangus, which belongs to the Gadidae. Development proceeded for 
above 36 hours ; thereafter the ova died, apparently from the want of 
fresh sea water. 
(2) Lemon Sole and Turbot. — Mr Scott fertilised the ova of Pleuronectes 
microcefphcdus with the milt of Rhombus maximus, which belong to 
different divisions of the Pleuronectidse. Development proceeded rapidly 
until the middle of the third day, when the ova perished from dust 
getting into the water. The embryo was then well formed, and hatching 
would probably have occurred about the 7th or 8th day. 
(3) Lump-sucker and Flounder. — The eggs of Cyclopterus lumpus 
belonging to the Discoboli, were treated with milt of Pleuronectes flesus, 
belonging to the Pleuronectidse. Development proceeded for a short time, 
but they were dead and had lost their red colour, within 20 hours after 
impregnation. 
T. 1 \YEMYSS FULTON. 
