240 Lake Maxinkuckee, Physical and Biological Survey 



August and again in September. The principal objects in repeat- 

 ing the work were to secure data on rate of growth, change in dis- 

 tribution, abundance, habits, spawning condition, food, etc. A 

 brief summary of the seining operations and results follows: 



July 5, 1:45 to 3:18 p. m. Stations 1 to 11, from Duenweg 

 cottage southward to Murray's; seine, 45 feet. Sky cloudy; no 

 breeze; air 74; water 76 to 78.5. All these hauls were made 

 over a sandy bottom, thinly coated with marl in places, covered 

 more or less with mussels (mostly dead), dead Vivipara con- 

 tectoides, and two species of live gastropods which fasten to rocks 

 and other objects. The bottom nearly everywhere was covered 

 with a good growth of Chara, not tall but enough to cause the 

 seine to roll a good deal. There was also a considerable growth of 

 algee, and except in the first four or five hauls, there was a fringe 

 of tall Scirpus (S. americanus near shore and S. validus further 

 out), 20 to 40 feet wide and in water up to 18 inches in depth. 

 Catch: Log perch, many; yellow perch, 69; bluegill, about 50; 

 grayback minnow, 10 ; rock bass, 8 ; straw bass, 9, mostly young ; 

 small-mouth black bass, 7, young ; straw-colored minnow, 4 ; pump- 

 kinseed, 2; skipjack, 1; and blunt-nosed minnow, 1. 



The majority of the bass were young-of-the-year, each about 

 one inch long. The sunfish and perch were also small, and mostly 

 one year old. 



July 6, 2 : 48 to 5 p. m. Stations 12 to 29, from Murray's to 15 

 yards west of Farrar's pier; seine, 45 feet. Air 76; water 77 

 to 79.5. Bottom of sand and fine gravel with thin coating of 

 marl in some places, covered with a good growth of Scirpus to the 

 westward, but rare near Farrar's. This of course interfered with 

 hauling the seine. Catch : Bluegill, 1,227 ; small-mouth black 

 bass, 23; yellow perch, 30; log perch, many; skipjack, 27; blunt- 

 nosed minnow, 11; grayback minnow, 2; pumpkinseed, 2; Iowa 

 darter, 1; straw-colored minnow, 1. The bluegill was by far the 

 most abundant species, the Scirpus patches literally swarming with 

 them. They were nearly all young-of-the-year or of the preceding 

 year. Crawfishes, mussels, gastropods and algse were fairly com- 

 mon. 



July 7, 1:40 to 4:03 p.m. Stations 30 to 52, from Farrar's 

 pier eastward to the high wooded shore on southeast part of lake on 

 Easterday's place; 45- and 15-foot seines used. Air 74 ; water 

 76. Bottom sandy with slight admixture of gravel to the west- 

 ward with more or less mud or marl overgrown with Potamogeton, 

 Scirpus and Chara in the last eight or ten hauls. A considerable 

 bed of mussels off the McDonald cottage, and many gastropods. 



