MARINE BIOLOGICAL STATION AT PORT ERIN. 29 
quarter of a million, and the daily average was about 118,900. 
The number of larve hatched was 3,612,900, and the great, 
majority of these were set free from Professor Herdman’s 
motor boat, Redwing. 
“ The Hatchery Record, giving the number of eggs collected 
and of larve set free on the various days, is as follows :— 
Eggs collected. Date. Larvae set free. Date. 
140,700 ... Feb. 25and 26 113,400 ... March 19 
eee «27 to March 2 250,950"... — ,, . 21 
504,500 ... March 4 and 7 BEANS HO+ coca) jn 
00 |... = yy 9 DAD ADO ia 8, ay 2G 
fee... =, . Ll ie 300)... April 
ioe... , 13 and 16 TD patoOe: 227 AM 3 
Peas. ;, i8and 19 AU OU Oe ee is 5 
oro... ,, -20 and 22 . pal 8525 |) ieee eee 8 
memeoe... ,, 2dand 25 195200. ee LO 
Peso...  ,,. 26 SOLS o0re cas! ee 
A ae i babHO0y 3. oe.e) Sle 
a 29 and 30 2 tOOn +e a Weess, LG 
365,400 ... April 2 to 5 SUG, GU0> -5..°. 9 0S 
0)... ,, Geto! 12 SOG O00 ce ee On 
Pee 700-25, 13 and 16 151200) 2. May el 
e000 ... ,, 18 to 25 2 OOO s cast. oittengine 
|) a 29 and May 6 BDO oe. 
4,280,850 Total eggs. 3,612,900 Total larvae. 
“We now have in the spawning ponds 20 plaice hatched 
in 1914, 15 hatched in 1915, and 24 hatched in 1916. Eleven 
of each of the 1914 and 1915 lots were recently measured by 
the Assistant Curator. The largest of those hatched in 1914 
was 36 cm. in length and the smallest 31 cm., the mean length 
of the lot bemg 33-9 cm. The length of the largest of those 
hatched in 1915 was 30 cm. and that of the smallest 28 em., 
the mean length being 29 cm. The largest of the 24 hatched 
in 1916 was 30 cm. in length and the smallest 21 cm., the 
mean length of the 24 being 24-6 cm. After measurement 
the fish were labelled and recorded and returned to the pond. 
