of the Fishery Board for Scotland. 195 
few miles off, in 58 fathoms of water, the specimens numbering 118, 
The measurements, arranged in centimetres, are as follows :— 
10 11 12 18 14 15 16 17 18 19 20 21 22 23 2% 25 26 
Dera sMted ete ailet lan On ivin Oy lOMlse masIisih) bros. 6 
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 
LIN ye Sef 82 geal pete el ayer ot Lea SR Tw eae eee Ue 
The curve shows at least five groups, though the lines are not very 
regular. The first comprises the fish up to about 15cm. The middle of 
the base is about 12cm. or 12‘5em. The next extends from 16cm. to 
to 22cm. or 23cm., the maximum number are at 2lcm., and the middle 
of the base about 19cm. to 20cm. The third extends from 22cm. or 
23cm. to 30cm., the greater numbers are at 27cm., and the middle of the 
base is about 26cm. or 26°5cm. 
In hauls in July, on the 3lst and 30th, that is about three weeks 
earlier, the same order of grouping can be made out, the measurements 
being as follows :— 
LD deeb 1G. he 18 ASL 2022) | 22°88 24 25) 26. 274.28 
Te 2) el pclitg un Ps tg Daa Aer A Sy ot ee Dp arctan t Oi = 
29 30 31 32 33 34 35 36 37 388 39 40 41 42 43 44 45 46 
CRee ema OLS OM eo Se Oe ae ON fe Oe aa On cae ce. Ze ih 
In collections made in October, the first and second of the above 
indicated series are best shown. ‘The following are the figures of the 
measurements, arranged in centimetres :-— 
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 80 31 
ity a ES eae ae ie eee ee er ee 
irceeetel erste yt gla yey By geek, re VE EN Eg 
Bi ean tos O) 1 Doe 8 olsen ees eG, 2) gfe SoGe eye g 
There are also given in Table XIII. the measurements from a large num- 
ber of hauls taken in the Moray Firth and Aberdeen Bay on two occasions, 
the first from 8th to 13th October, 1900, and the second from 31st 
October to 9th November in the same year. The curve formed by the 
former series shows two great aggregations, the first exteuding from about 
15cm. or 16cm, to 27cm. or 28cm., and the second from the latter point 
to 4lem. In the former the maximum number are aggregated at 23cm. 
(9 inches), and in the latter they are aggregated at 36cm. (143 inches), a 
difference of 13cm., or a little over 5 inches. It seems tolerably certain, 
however, that one or other of these, and probably both, aggregations com- 
prise more than one annual series, though the very deep depression 
between the two cones is marked, and very distinct. The measurements 
at the beginning of November are less satisfactory, the curve formed being 
irregular. The second aggregation is poorly represented, but the first is 
well marked, but begins at 14cm., and the maximum number are at 18cem.; 
there is a well-marked depression at 27cm., much as in the curve of the 
measurements taken some weeks earlier. The figures arranged in centi- 
metres for the two series of measurements are as follows :— 
IANIS 14015-1617 18" 19. -20') 21 (22) 23°24 25) 26° 27 28° 29 30 
(Gi) oe Ns So SE AA ES RSS ES eT fl 1 Ba UY alee Ua sal (ey a a: a «am ©) 
(2) srt 5 Peas op ISG T 2 25nyl4e012) dds TS) LOO) SF AGRA eZ 110 
31 32 33 34 85 386 37 388 39 40 41 42 43 44 45 46 
Cy Seu ebrar a, oo 9o 1b 4 1 hy = 
Oye Cae eee eee eee ae a) LA's Pee pone th pots! u 
