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Part III. — Twenty-seventh Annual Report 



Table giving the Temperature in degrees centigrade of the Cooled Water in 

 which were the Eggs of Lots Ic, lie, and IIIc. 



* F. — Date of fertilization. 



+ Maximum of three to seven readings daily (day and night). 



+ Minimum ,, ,, 



Fourth Lot of Spawn. — The eggs were fertilized at St. Monance between 

 1 and 3 a.m. on February 29. They were obtained from live females and 

 also from females which had died a short time previously. The milt was 

 taken from live males. The plates were packed at 7.30 a.m., and unpacked 

 at Aberdeen at 3 p.m. The water in the barrel was at that time at 2 '8°, the 

 hatchery water was 3°, while the cooled water was 1"7° C. 



This lot was divided ; the larger part (IV.) was put into uncooled water, 

 while the remainder (IVc.) was transferred to cooled water. 



Some spawn (IVb.) was found free or stuck to the bottom of the barrel 

 in which the herrings had been kept alive on the fishing-boat. This was 

 put into the water of the hatchery at the ordinary temperature, but instead 

 of being in the metal egg-boxes in which the rest of Lot IV. was kept, it 

 was kept in a Dannevig hatching-box. On March 23 it was transferred to 

 a shallow floating hatching-box. The eggs were single or stuck together in 



