278 
LOCAL DISTRIBUTION OF PLANKTON IN RIVER AS SHOWN BY CHRONOLOGICAL 
CATCHES. 
|Esti- |Esti- | | | | De- Av. | T’lr’ge 
mated mated | | Temp. | Stage Catch | parture depart.| of limit 
No. of|rateof|range | Date | (F.)at) of per from _|inper | in per 
group | cur- in bott’m | river m.* mean in| ct. of | ct. of 
rent | miles | per cent,|mean | mean 
1895 5 ie 
I 4 ; uly 29 | 75-5 | 5.3 +47 22.3 
3 ; ek 1| 77.8 | 4.20 74 —22.3 | =22-3| 44.6 
2 36 Aug. 5 | 79. 3.13 -95 fo) 
: Ce ts Pao 2.63 95 fo) S © 
6 Aug. 12} 82.5 2.40 5-94 —1.2 
3 ° : | CEES || tee. |) Basis 6.08 +1.2 |= t-2 ane 
3 Aug. a 78 2.35 tee age 5 
4 Hu eZ6)|879 2.7 4. —18.5 
2 3 “ 29] 80 2.58 3.92 —26 24.3] 74.5 
i SOB 7 725) ||) 0205 5.08 4.1 
Sept.5 | 72.5 | 5.70 1.48 a 2D 
j ao Wee 6.35 1.16 + 4.1 ree ae 
5 .75 | 108 7 eye 5.88 .86 —28.9 | =!7- 51. 
9) | 72.5.) 038 | E48 url) she.g 
eo | fe 4.25 | 1.06 | —12.4 
Sept.12| 78. 3.90 2.92 -+-27 
MR cae es |, hl eae ke 
e II aged 74- 3. 9 i) +29. I. 
: he OTS eas ele ghigc: 1.19 —48.3 a ae 
LY « 20] 78. 3.20 | 1.98 —13.9 
| Sept. 23] 76.5 | 2.75 1.37 +15.1 
7 25 2A 25) 725 2.63 1.05 —11.8 |+10.4] 26.9 
1 se AN pet /2b 3.23 1.14 — 4.2 
J 1896 
} Jan. 6 | 32.2 | 12.20 51 ae 
8 ; 2 Ces) 2.1 | 11.90 1.21 
orale i “ 10 a rio 1.02 BEA £25 78.7 
oly 32.4 | 10.80 83 19,7) 
j Jan. 15 gel 10.40 I Be —10.2 
OG" 4 2. -50 1.01 —11. 
9 2 720 ; a = a hes 2.36 ee +10.8] 26.8 
“30 | 34.3 | 8.10 2.18 oh, 3) 
§ Mar. g| 37-1 | 10.20 4.96 — 6.1 
1) 2 720" ||) Se 35. Ca Oage ee Ees — 3-8 |+6.6 | 15.9 
) “ 24] 40.7 | 8.80 5.80 + 9.8 
Apr. 1.8 | 6.90 | 17.07 Hoe 
: ; oh { ne By see ae 16.91 ea 0.5 I 
Apr. O. 7-10 9-93 28.1 
ar : a Meas 738 7.10 | 5.00 eae +28.1| 56.2 
SAug. 15 | 78. 7-40 2.32 + 1.1 
13 75 Tes WO nit | 7S 7-50 | 2.72 | 118.8 |+12.8] 38.4 
: 2T 7 7.10 1.84 —19.6 
Aug. 26 | 77- 6.50 1.44 — 7.7 
af 6 43.4 { eo 29 | 74- 6.00 1.68 tO agh Waele Le 
Av._| ] | [ | | | [14.1] 37-4 
