86 



PLANKTON OF WINNEBAGO AND GREEN LAKES. 



Table XXI. — Numbers of Leptodora per square meter in Lake 



Winnebago. 



Date. 



No. 



Date. 



No. 



Date. 



No. 



1899 





1899 





1900 





July 5-11. 



714 



Aug. 30- 





Sept. 8 . . . 



357 



July 12-18. 



952 



Sept. 5 



714 



Sept. 22.... 



238 



July 19-25. 



1,904 



Sept. 16.... 



1,904 



Oct. 20.... 



238 



July 26- 





1900 





1901 





Aug. 1 



1,666 



May 24.... 



238 



May 11.... 



714 



Aug. 2- 8. 



952 



June 9 



238 



June 8 



476 



Aug. 9-15. 



238 



June 25 



714 



July 12.... 



1,428 



Aug. 16-22. 



238 



July 28.... 



238 



Aug. 24 



238 



Aug. 22-29. 



476 



Aug. 22.... 



476 







Table XXII. — Numbers of Cypris per square meter in Lake Win- 

 nebago. 



Date. 



No. 



Date. 



No. 



Date. 



No. 



1899 





1899 





1900 





July 5-11. 



1,428 



Aug. 23-29. 



11, 186 



June 25 



476 



July 12-18. 



10,510 



Aug. 30- 





July 9.... 



16,184 



July 19-25. 



53,788 



Sept. 5 



9,520 



Aug. 22.... 



1,904 



July 26- 





Sept. 16.... 



17,612 



1901 





Aug. 1 



714 



1900 





June 8 



714 



Aug. 2- 8. 



5,712 



May 11.... 



952 



June 25 



9,520 



Aug. 9-15. 



15,232 



May 24.... 



7,616 



July 12 ... 



952 



Aug. 16-22. 



16, 422 



June 9 



2,856 







