521 



dam, although the mussel-bar was diligently used in both places. A 

 small bivalve mollusk, Spharium transversmn, was abundant along 

 the north shore ; and the univalves were much the same as at Mor- 

 ris. Living specimens of the following species were collected; 

 Lynmcra dcsidiosa, L. huuiilis, L. rcflcxa, L. palustris, Planorbis tri- 

 vok'is, Succinea oralis, Physa gyrina, and Polygyra multiline ata — 

 the last alive in only one collection. 



The yield of our fishing operations was somewhat more varied 

 at Marseilles than at Morris, but only in the immediate neighborhood 

 of small creeks and springs, where the water was locally or tempo- 

 rarily more tolerable than in the main stream. No trace of fishes 

 was found above the Marseilles dam during July or August, 191 1; 

 and it was not until October 13 that a few minnows (Cyprinidce), 

 not identifiable at the distance, were seen near the north shore a 

 quarter of a mile above the dam. 



November 30 and December i, 191 1, hauls were made with a 

 120-foot minnow seine and a 150-foot one-inch mesh seine, on both 

 the north and south shores, some three eighths of a mile above the 

 dam ; and in the vicinity of small creeks. Many young perch and 

 shiners (Notropis athcrinoidcs), a black bullhead, and a young carp 

 were captured here at this time. None had taken food except two 

 perch, one of which had eaten a small shiner and the other a naiid 

 worm. February 20 to 29, 19 12, two 6-foot set-nets, kept in place 

 along the north shore, were Hfted daily, a 120-foot minnow seine 

 was hauled in water two to four feet deep, and 26 half-pound sticks 

 of dynamite were exploded on both shores and in the mid-channel. No 

 fish were taken in the set-nets ; a single small shiner was caught 

 with the minnow seine ; and two perch and several shiners were got 

 with dynamite. The stomachs of all were empty. 



In August and September, 1912, conditions were similar to those 

 found at Morris at the same time. Set-nets were raised every day 

 from August 13 to 17, but without result; and a dozen half-pound 

 sticks of dynamite were exploded, but no fish were taken. Small 

 seines were used on the north and south shores, and the fishes thus 

 caught, within or near the mouth of a small creek on the northern 

 side, were as follows: black bullhead, i; common sucker, 2; striped 

 sucker (Minytrcnia mclanops), i golden shiner (Abrmnis chrysoleii- 

 cas), I ; bullhead minnow; (Cliola zHgilax), 12; straw-colored min- 

 now (Notropis blenniiis), i; young crappie, i; rock bass, 6; pump- 

 kinseed (Enpomotis gibbosiis), i ; orange-spotted sunfish (Lcpomis 

 humilis), i; and Johnny darter (Boleosoma nigrum), 4. On the 

 night of August 19, a heavy rain, w^hich flooded the small creeks. 



