BULLETIN OF THE UNITED STATES FISH COMMISSION. 121 
October 7 ; 3 females and 5 males being caught. In the Bugda River, 
near by, the fishing lasted from October 1 to 19 ; 10 females and 13 males 
being caught. Thus altogether 13 females and 18 males were taken. 
This number diminished considerably before spawn was obtained, as 
the stream was too strong in the retaining boxes, and the fish were not 
sufficiently cared for. The first salmon eggs were artificially impreg- 
nated in Iceland on October 16, 1884. This was continued until No- 
vember 8, there being fecundated in all from 26,000 to 27,000 salmon 
eggs. 
On December 23, sixty-nine days after impregnation, the development 
of the embryo was so far advanced that the eyes were visible in those 
that were fecundated on October 16; on January 5 the eyes were per- 
ceived in eggs impregnated October 28 ; and the eyes of those impreg- 
nated November 8 appeared on January 28. It is worth noticing that 
Mr. Johanson put snow into the water in order to make it colder for the 
purpose of delaying the hatching, because he thought it unsafe to put 
out the fry into the rivers till May. It seems, also, that hatching was 
especially delayed during the latter part of the season. 
The first fry appeared on March 4, so that the period of incubation 
for these was about one hundred and forty days; but the journal stated 
that on March 23, everything of the first lot of eggs impregnated had 
been hatched, so the whole period extended over one hundred and sixty 
days. By April 28 the whole number of fry were hatched. 
Owing to heavy rains the filtering box often became unclean from the 
settling of mold and mud that fell into it. Ducks often stirred up the 
soil in the bog, which also caused the water to be muddy; and so both 
gravel and box had to be cleansed repeatedly. 
The fry were kept in the hatching-boxes till May 23, when nearly 
10.000 young fish were planted in Bugda River ; and on the 25th of May 
12.000 were planted in Laxa River, above Vindas. The temperature in 
the Bugda at this planting was 10° 0. [50° F.], and 8|° C. [47f° F.] in 
the Laxd. Of the whole number fecundated (from 26,000 to 27,000), 
there died 1,030 eggs; while probably the total loss was about 13 per 
cent. 
On March 1, when the embryos were well developed, Mr. Johanson 
transported 3,400 salmon eggs from Reynivellir to Thingvellir, to finish 
the hatching there, and plant the fry in the lake of Thingvallavatn, so as 
to see if the salmon ( Salmo solar) could live in this lake. The temper- 
ature during transportation was very low, being at — 17° O. [1.4° F.], 
but few eggs died. 
During the same winter (1884-’85) an attempt was made to have a 
hatchery for mountain trout ( Salmo alpinus) established at Thingvellir. 
Mr. Johanson went there on October 5 and impregnated about 10,000 
eggs, which were placed in a wooden box 36 inches long, 16 wide, and 
11 deep. They were kept in a cold spring, there being no hatching- 
house. On October 28 nearly 10,000 eggs more were impregnated and 
