SEA-FISHERIES LABORATORY. Byly 
more than an old one. We met last summer with even a 
more striking case of the effect of age on the catching 
power of a net. 
CoMPARISON OF THE WeicHtT, Fine, Coarse, “ Putiry ” 
AND New Nets, As rEGARDS Totau.Catcu (IN C.C.). 
Date, &c. Fine. Coarse. Weight. “Pulley.” New. 
Aug. 4 Stat. I 0:5, 0-8 ae 1-5 xis a 
” 4 ” 0:8, 0-8 Te 1-5 Se = 
| St) ene 14, 2:5 — 1-4 a ee 
eee stat LC. 0-5 ae 0-5 4-3 she 
if (he 1 0:7, 2:6 — 8 5:5 == 
f 6 2 miles N.W. of 0-6 — — 3:1 11:8 
Bradda. 
Poeyistat, I... 0-8 st 0-7 2:8 7-5 
» 7 2m. off Bradda 1-0 6 a oe ea 
“6 8 Stat. IT. mete 0-4 = 0:6 9-5 3:0 
Poorstaty, 0-4 m2 1-6 0-1 2-0 
bemoan DL, sem 0-6 — 2:0 0-4. 1-6 
Pelee ALT. |... 1:3 — 2-0 0-6 5:0 
Peto 2 mM... W. ... 0:2 — = == 1:5 
. 1 ee ee 0-6 ae 0-9 0-5 0-4 
» 13 Pecten Bank 0-1 — — 0:6 0-4 
ee stat. 1. re 0:5, 0-4 — 2°5 — = 
>a A. Ais 0-3, 0-2 — 1:0 — == 
Kase ae 0:6, 1-2 — 1-0 3-2 oe 
- 0) Lis) 2 iS 0 0:4, 0:3 — 1:8 = =. 
meeetoer.. — L. aaa 0-7, 1:0 — 1:5 53 — 
5 GSS Se 0-1, O-1 a 0:8 — — 
Been ce 1, 0:7, 0:5 — 0-6 3°2 — 
poeeaOvs,, ILE 0:4, 0:2 — 1-0 1:9 a 
2 ee 2-0, 0-2 = 0:7 — = 
Seek | iy IV. 2:4, 0:3 — 1-5 =— ae 
a) 0 in 1 0:2 — 1-0 0-4 2-0 
Mazo, -, LIT. 0:5 -— 0:3 0-2 0-1 
memos, A. 0:5, 2:0 _ — — — 
_ 1 ae 0:3 — 0:8 - 1:0 1-0 
eco bay | i... ... 1-4 — 0:6 — —- 
Sods es ee 0-1, 0:5 _- 0:3 —_ — 
meals Stat. ue: 0:3 0-2 — 1-2 
At the beginning of the season 1908 all the ordinary 
plankton nets on the yacht were new, and were made 
from the same piece of No. 20 silk. So, although well 
washed down when used, and periodically soaked in fresh- 
water, they no doubt all got old together and at much the 
