80 



PLANKTON OF WINNEBAGO AND GREEN LAKES. 



Table IX. — Numbers of Cyclops brevispinosus per square meter in 

 Lake Winnebago. 



Date. 



No. 



Date. 



No. 



Date. 



No. 



1899 





1899 





1900 





July 5-11. 



8,806 



Sept. 16.... 



7,140 



Sept. 22.... 



1,904 



July 12-18. 



13,090 



Oct. 7.... 



2,380 



Nov. 6 . . . . 



1,904 



July 19-25. 



5,236 



Oct. 21 ... . 



476 



1901 





July 26- 





Nov. 4 



952 



Mar. 30.... 



238 



Aug. 1 



13,328 



1900 





July 12.... 



10,472 



Aug. 2-8. 



17,612 



May 11 



5,712 



July 27.... 



19, 992 



Aug. 9-15. 



5,236 



July 9.... 



12,376 



Aug. 24.... 



15,232 



Aug. 16-22. 



5,750 



July 28.... 



20,944 



Sept. 18.... 



30,464 



Aug. 23-29. 



6,664 



Aug. 22.... 



1,904 



Sept. 28.... 



19,992 



Aug. 30- 





Sept. 8.... 



2,856 



Oct. 12.... 



3,808 



Sept. 5 



5,236 











Table X. — Numbers of Cyclops pulchellus per square meter in Lake 



Winnebago. 



Date. 



No. 



1 



Date. 



No. 



Date. 



No. 



1899 





1900 





1901 





Nov. 4 



5,712 



May 24 ... . 



8,568 



Mar. 30.... 



238 



Nov. 25 



6,664 



June 9 



1,904 [ 



April 27.... 



3,808 



1900 





Oct. 20.... 



5, 712 



June 8 



7,616 



Jan. 27 ... . 



7,616 



Nov. 6 . . . . 



952 



June 25 . . 



3,808 



Mar. 3.... 



238 



Nov. 21.... 



1,428 



Sept. 28.... 



3,880 



Mar. 17.... 



7,616 



1901 





Oct. 12.... 



952 



April 28 ... . 



3, 808 



Jan. 19.... 



238 



Nov. 2.... 



15,232 



May 11 



18,088 











