Lake Maxinkuckee, Physical and Biological Survey 17 



B. Wilson of Westfield, Mass., studied the parasites of the fishes 

 of the lake during the summer. 



In 1907, Dr. Evermann was again at the lake from August 3 

 to 8 and from September 7 to November 6, and Mr. Clark from 

 September 12 to November 6. 



In 1908, Mr. Clark was at the lake from August 19 to Sep- 

 tember 11, Dr. Wilson from August 19 to September 7, Donald 

 Earll of Washington, D. C, from August 19 to September 4, and 

 Dr. Evermann from September 6 to 10. In 1909, Mr. Clark and 

 Dr. Wilson carried on work from July 21 to 28, on August 1 and 

 2, and from August 31 to September 13. In 1910, Dr. Evermann 

 was at the lake September 27 to 29, and October 1, 2 and 6 ; and 

 from October 31 to November 4 in 1912. In 1913, Dr. Evermann 

 was at the lake from September 2 to October 20, and Mr. Clark 

 from September 9 to November 9. 



In addition to the observations made by the above named in- 

 vestigators, a great many observations were made and recorded 

 by Mr. Chadwick, particularly in the winters from 1898 to 1914. 



It will be observed from the foregoing that more or less field 

 work was done in each month, but that most of it was done in the 

 summer and fall months. The longest continuous period of obser- 

 vation was that from June 19, 1900, to July 11, 1901. The longest 

 continuous period by any one observer was that covered by Mr. 

 Clark from August 27, 1900, to July 11, 1901. During the winter 

 of 1900-1901, Mr. Clark spent the entire time alone at the lake 

 devoting all his time to field observations. Practically the only 

 other winter observations we have are those communicated to us 

 by Mr. Chadwick. 



Perhaps the most satisfactory records are those for the fall 

 months, September and October, as those months have been cov- 

 ered, in part at least, in more different years. The spring records 

 are most incomplete and unsatisfactory, practically the only obser- 

 vations foi" those months being those made by Mr. Clark in 1901. 

 It is much to be regretted that a more thorough study of the lake 

 could not have been made in those important months. 



While our studies of the lake have been quite unevenly dis- 

 tributed throughout the year, while many observations have not 

 been verified as often as might be desired, and while many phases 

 of lake study have barely been touched, and others not at all, 

 nevertheless, it is hoped that the studies have added materially 

 to our knowledge and understanding of the physics and biology 

 of small glacial lakes, such as are found so abundantly in the upper 

 Mississippi Valley states. 



