318 
TABLE I—continued. 
ORGANISMS PER CuBICc METER IN PLANKTON OF ILLINOIS RIVER IN 1898. 
(An asterisk at head of column indicates that all entries 1n it are based on 
filter-paper collections.) 
3 7 
3 3 
S$ S 
as Ss 
= “= an 
1898 Ls S38 BS =e SS 8 
a2. Cyt ob oS SS es Bo 
8H S88 aS 5 & ss 25 
S88 SE8 =8 86 es 25 
=" a = a A” oA 
jam dino oe 0 0 0 0 0 14,400 
he i Sei 1,000 24,000,000 2,200 3,000,000 900 800 
a8 Caer 9,090 10) 49 ,536 0 3,870 42,183 
Rebs 93s usu 2,204 (0) 3,180 5,400,000 300 5,400 
se Bice 3,200 120,000 6,000 3,600,000 880 1,200 
Ha CAD TERS a a 2,800 14,400,000 48 ,000 10) 4,000 400 
Oe ee 0 (0) 120,042 0 6,318 3,159 
ERS, ilps om oe (0) 7,200,000 0 90,000 |" 400 400 
* Bxperswanves 10) 3,600,000 0 1,800,000 800 400 
ae ieee 8,640 8,100,000 5,200 900,000 800 2,800 
Te Oa 60,800 10,800,000 800 1,800,000 0 14,000 
sie NLD Oa en 30,240 2,700,000 1,000 900,000 400 8,600 
Aree Aes rar 1,620 900,000 1,800 4,500,000 0 1,400 
LOW ED uac, nah 3,960 1,620,000 0) 4,500,000 300 2,100 
Sa) Cle Alar 2,800 7,200,000 3,600 3,600,000 800 6,800 
ee We Oleatan tke 595,840 (0) 72,960 1,800,000 800 614,400 
Maya 23 :ayst cece 230,400 9,000,000 552,960 6,000,000 6,200 2,016,000 
pe We ae 3,421,440 10) 3,164,160 21,600,000 1,600 9,043 ,200 
Ca Th hacen 259/200 0 1,241,200} 64/800;000 0| 3,801,600 
Pe ee eae 109 ,040 10,800,000 126,720 9,000 , 000 , 200 86,400 
CONE ieee a 293,360 1,008,000 101/760 5,400,000 40 14,400 
Nfarie tie 26,028,800} 103,320,000 998, 400 1,800,000 0 28,800 
CINE 1g leae be 0} 128,560,000 488,320 3,600,000 800 57,600 
Be Be Hla le 32,114,880] 232,200,000 470,400 14,400,000 1,600 127,200 
LD ea 153,120| 44'100/000 72.960 2;700,000 800 20,800 
diaivente cee. 3,628,800} 70,200,000 34,560 7,200,000 1,600 3,200 
Loe SD iene se Gat: 1,811,520| 41,040,000 86,400 2,700,000 1,600 3,600 
SO PIO Gren nt 947,520] 115/200;000 57600! 54/000/000 1/600 1,600 
pte Ole eee 133,920 20,200,000 1,000 3,600", 000 800 400 
Aug. i265 2: =: 316,240} 50,400,000 12,800| 12,600,000 6,400 4,000 
3 Or Aes 1,484,000 27,720,000 800 10,800,000 2,000 800 
sTHor ees 1/2501656 0 6,400 7°200;000 1/600 300 
SN Deven 366,400 50,475,000 12,800 7,200,000 3,200 2,400 
eM ee 5,028,800] 104,490/000 0 3,600,000 0 6,400 
Sept Omnis ae 1,122,000 56,250,000 0 5,400,000 0 800 
eS Sige erate 1,200,000} 64,800/000 7,000} 16,200,000 500 1,500 
ed OF meres: 2,227,000] 33,480,000 30,000 1,800,000 500 5,000 
PST che ae 5,499,840) 146,520,000 94,080 9,000 , 000 4,800 17,600 
Octes Wipe o 805,800) 40,500,000 18,900 9,900,000 0 2,000 
oe Wail weer 840 , 000 37,800,000 55,350 0 10) 3,500 
Se UL Oreo 436,650 27,360,000 348 , 000 12,600,000 0 8,000 
ED Stare 736,000 56,700,000 214,500 5,400,000 1,000 2,000 
INGE ele 83,200 3,600,000 70,550 12,600,000 0 12,500 
+ Sitarta ee 98,700 10,800,000 25,120 19,800,000 0 19,000 
EDs nists Rete 7,000} 22/680;000 57,400} 21,600,000 3,000 6,000 
oeiy OID IR aoe 60,000} 194,400,000 0 23,400,000 0 4,000 
2 Oe 2,000 13,500,000 9,500 18,000,000 0 3,500 
Dec# onan 0) 5,400,000 0 6,300,000 0 1,500 
ce RES One tee 0 0 (0) 6,300,000 0 2,600 
Pe eh DOS 10} 4,500,000 0 4,500,000 0 4,400 
SSD] beans 0 0 0 2,700,000 10) 1,600 
Average...... 1,181,125| 34,762,365 148,626 8,569,038 1,612 308,330 
