45 

CENTIMETRES. 
Station. Date. Wimter 53 04 25 296 27 28 29 30 31 32 Total 
Rings. 5 
Lerwick I»... says HA eilye aee 3 Ite Siete) GCS eile cme ae ae IO 
Lerwick IT.... sao. PALSY PALL son 3 —- => ¢6 9 2 6 1L— — — 24 
Lerwick I. ... PO Ufzile wreee Gh a 8 8 0 1— — —-* 29 
Lerwick IT.... ee CES Hie cae Le fa Bi ee A eye his} 1— — 3 
Lerwick I. ... Bea TA fl ime Gy Se a aes ala all 2 — — 43 
Lerwick IT.... goo EY Sy PAN 53 5 — — — 3 611 9 13 #1 1 44 
Lerwick I. ... Br AN PAL, Maso 6 — — — — 2 9 6 2— — 19 
Lerwick IT.... Bre PY Sy PA ras Cry a A ON iy deem Ba ee) abe, 
Lerwick I. ... See iee nee C—O ie eG ea —— ee —— 88 
Lerwick IT.... noe AY Sy RAL eon 7 —- —_—- — 1 1 Cm 2 a: 4 1 39 
Lerwick I. ... Son Pally eRe 8 — — — 1 Qa S32 8) 2 Oe == 1 3l 
Lerwick IT.... spe ey Pal ere 8 1 5 9 4 —— 119 
Lerwick I. ... bao PAYPAL Ges 9, — —- — — 1 As “80 32 1 — 16 
Lerwick IT.... Bon ee key pe) lorie 9 — — — — 1 if VAT Mas: 2 — 14 
Sample III., Lerwick, from 8 miles N.N.E. of Lamba Ness, 
4th March, 1922, was from a spawning shoal. It contained many 
old fish, the majority of which had six to nine winter rings. It 
was a large sample for size, most of the fish being between 31 
and 33 cm. 
The last sample from Lerwick was taken on 7th June, 1922, 
from 15 miles N.W. of the Ramna Stacks. It was a sample of 
spent fish, and these fish were smaller in size than those of 4th 
March, and also younger (page 29). In size these fish were from 
26 to 28 cm., and a comparison of the data given in Table II. will 
show that the age was not the determining factor as regards size. 
The first sample from Wick was taken on 23rd August from 
3 miles from Clyth Ness. It was a small sample for size, most 
of the fish grouping themselves at 24, 25 and 26 cm. 
The February sample from Wick was caught 7 to 8 miles 
west by north of Whiten Head. As will be seen from Table 1. 
most of the fish were from 28 to 31 cm., but the number under 
30 cm. was less than that under 29 or 31 cm. This is accounted 
for by the size and number of fish with six, seven and eight winter 
rings, the data for which are as follows :— 
CENTIMETRES, 
Winter Rings. 28 29 30 31 32 33 Total. 
6 3 2 6 9 5 — 25 
id = — — 5 1 — 6 
Sand + — _— 2 13 15 3 33 
