of the Fisher ij Board for Scotland. 



113 



April 11, 12, 13. — No live larvfe were seen. The plate was examiaed on 

 the last date. A great number of the eggs had been killed when on the 

 point of hatching. The eyes were well pigmented and silvery. 



The fry then appeared at intervals of from 28-41 days after fertilization. 

 The eggs of this lot which remained uncooled (viz., IV.), hatched out in 

 22 to 35 days. 



The Temperature of the Cooled Water in which Batches IVc, lYc^, and IVc^ were kept. 



Degrees centigrade. 



Date. 



Feb. 29 



Mar. 



10 

 11 

 12 

 13 

 14 



IVc. 



M. 



F.3 

 1-2 

 1-6 

 1-4 

 1-6 

 2-8 

 2-6 

 2-4 

 2-2 

 2-2 

 2-4 

 2-2 

 1-6 

 2-2 

 2 2 



IVci. 



M. 



F.3 

 3-6 

 3-6 

 4-2 

 46 

 4-6 

 4-6 

 4-3 

 1-4 

 2 



2-2 

 2-2 

 1-4 

 2-2 

 2-2 



2-8 

 3 



3-4 

 3-6 

 3-8 

 3-8 

 4-4 

 •1 

 •6 

 1-4 



Date. 



Mar. 15 



„ 16 



„ 17 



,, 18 



„ 19 



„ 20 



„ 21 



,, 22 



,, 23 



„ 24 



,, 25 



„ 26 



„ 27 



„ 28 



„ 29 



IVc. 



M. 



2 



2-6 



2-4 



2-2 



2 



2 



1-5 



1-5 



2-2 



2-4 



1-5 



2 



3-2 



2-2 



2-4 



1-2 

 1-6 

 1-6 

 1-2 

 •6 

 1 



1-2 

 1-2 



1-8 



1 



1-2 



1-5 



1-5 



1-4 



IVc^ 



M. 



1-6 



2-4 



2 



2 



1-6 



1-8 



1-4 



1-4 



2 



2 



1-4 



1-6 



3 



1-6 



2 



1-4 

 1-4 

 1 



•8 

 1 



•8 

 1-2 

 1-8 

 1-5 



•8 

 1-2 

 1-6 

 1-4 

 1-3 



lVc2. 



M. 



For the Tem- 

 perature up to 

 Mar. 18, vide 

 IV., Tab. p. 110 



Date. 



Mar. 30 

 „ 31 



Apr. 1 

 2 

 3 



6 



7 



8 



9 



10 



11 



12 



13 



IVc. 



IVci 



IVc-. 



M. 



3- 



2 6 



3 2 

 2-1 

 2-6 

 2-6 

 22 

 26 



re 



2'5 

 2'6 

 2'8 

 3 4 

 i'2 

 3 "4 



M. 



2-4 



2-4 



2-8 



1-8 



2-4 



2-2 



2-2 



2-3 



1-2 



2-6 



2-6 



3 



3-4 



4-4 



3-4 



M. 



1-4 



1 



1 



1-4 



1-2 



1-2 



1-1 



1 



•9 

 1-4 

 1-8 

 1-5 

 1-6 

 2 

 1-6 



y2-8 



2-6 

 3-6 



/5-2 



/4 



/3-4 



/3-8 



/3-8 



/4 



/3-2 



/4-6 



/4 



4 



4-2 



4 



1-6 



1 



2 



2-7 



3 



2-8 



2-2 



2-6 



2 



2 



2-4 



2-4 



1-8 



1-8 



3 



IVc. 



IVci 



Date. 



M. 



Apr. 14 



„ 15 



„ 16 



„ 17 



„ 18 



„ 19 



„ 20 



„ 21 



„ 22 



„ 23 



„ 24 



„ 25 



„ 26 



„ 27 



„ 28 



M. 



3 



/2 



/4 



/I 



2 

 /2' 



3 

 /3' 



2' 



5' 

 /5 



",/" indicates the date upon which fry appeared. 



Fifth Lot op Spawn. — This lot consisted of spawn on gravel. It was in 

 the form of large masses, small groups of eggs, two or three and upwards, 

 attached to pieces of gravel, or simply to one another, or single eggs free or 

 attached to stones. There was a great quantity of single eggs. 



March 5. — The eggs fertilized on the morning of March 5 arrived dt 



