274 
departure only 14.1 per cent. I know of no test of similar ex- 
tent elsewhere with which this may be compared, but its range 
is well within the limits of the records of repeated catches in 
TEN CONSECUTIVE CATCHES FROM ANCHORED BOAT. 
_Vol. of catch Departure from average 
pet aL EMC [Die Ute In volume | In percentage 
I 3.20 + .07 Sipe 
2 3.24 ata ea +3.4 
3 3-04 — .09 —2.9 
4 3.40 SE Pi +8 6 
5 3.06 — .07 755) 
6 3.20 + .07 2.2 
7 2.94 — .19 —5.5 
8 3.20 + .07 +2.2 
9 2.94 — .19 —5-5 
10 3.10 .— .03 —1. 
Average 3.13 => 2112 +3.58 
Greatest + + .27 +8.6 
Greatest — — .19 —5.5 
DEPARTURES FROM MEAN CATCH COMPUTED FROM HAULS FROM EQUAL DEPTH 
IN GERMAN LAKES BY APSTEIN (’96, pp. 56-57). 
Ap- No. | Average catch | Average depar- | Limits of depar-| Total 
stein’s of : ture from mean | tures of percent- | range of 
No. hauls in cm.* in per cent. ages. departure 
23 b-d 3 4.66 22 — 3.4 to+ 3 6.4 
26 a-c 3 5.5 6.1 —9.1 “+ 9.1 18.2 
27 a-e 5 4.1 7.8 —14.6 “ +15.9 30.5 
28 a,b 2 4.5 11.1 —Ir1.i “ +I0LI D2 
30 a,b 2 g.12 1.3 Sag) Sa ita) 2.6 
32 a-c 3 13.2 4.3° = 5.3 ~ + 6.1 11.4 
33 a,b 2 26.3 6.4 — 6.7 “ + 6.7 13.3 
33 dye 2 15.5 BEz — 3.2 “ - 3.2 6.4 
34 a,b 2 17. 8.8 — 8.8 “ + 8.8 17.6 
37 a-c 3 2.43 8.6 — 7.4 “ +13.2 20.6 
41 a,b 2 1.5 13.3 —13.3 “ +13.3 26.7 
43 a-c 3 1.93 19.5 =17.1 “ —29-5 46.6 
46 a,b 2 2. oO. Oo. oO. 
65 a,e 2 3-3 7-7 Pop Oa sy 15.4 
73 a,b 2 2.5 oO. oO. Oo. 
45 a,b 2 1.2 8.3 — 8.3% + 8.3 16.7 
47 b,c 2 I.1 Oo. Oo. oO. 
63 a,g 2 1.23 2.5 —- 2.5 “+ 2.5 5: 
68 a,b 2 O.1 oO. Oo. Oo. 
69 a,b 2 --O.1 Oo. O. Oo. 
70 a,b 2 0.16 oO. Oo. oO. 
24 a-C 3 I. @); Oo. oO. 
83 a-c 3 1.13 3.8 — 2.7“ + 6.1 8.8 
