[-:; | INN ERTKBBA1 E LKIM LL8 OF N [NE1 \i;i> 8OI 



Hats of the species found in them were made. Most of those thn 



eertained to IK- their ordinary I'ooil were traced to their natural li.i 

 from wheiiee (lie lishrs obtain tin-Ill. 



9th. The parasites of fishes, both external and internal. 



collected and preserved for 1'iiture study. 



A large collection of such parasites was made, hut the inh-inal pi 

 sites, wliich are very numerous, have not yet been studied. The- inter- 

 nal parasites were collected chieily by Dr. I'Mward Palmer. 



The map accompanying the present report serves to show the locali- 

 ties explored, and the extent of the labor in dredging and sounding. 

 The operations during the lirst six weeks were, under the charge of .Mr. 

 S. 1. Smith, who remained until July -">. He NVJIS assisted by Dr. \V. 

 (i. Farlow, who also investigated (lie alga*. Professor J. E. Todd, of 

 Tabor, Iowa, then took charge of the work for three weeks, until J 

 able to join the party, on the 16th of August During the remainder 

 of 'the season, until September -'<>, the operations were under my imme- 

 diate superintendence ; but Professor A. Hyatt, of Boston; Dr. A. S. 

 Packard, of Salem; Dr. Farlow, of Cambridge; and Professor D.C. Katon, 

 of New Haven, gave very important aid in carrying out our investiga- 

 tions, and our thanks are due to all of these gentlemen for their assist- 

 ance. Several other naturalists were present, from time to time, and 

 cooperated Nvith our party ill various ways. 



The dredging operations in the shallow waters of Vineyard Sound 

 and Buzzard's Bay were carried on at first by means of a sail-boat, but 

 during the greater part of the time by means of a steam-launch. The 

 divdgings outside of these waters, and off Martha's Vineyard, were all 

 done, by means of a United States revenue-cutter, the steamer Mocca- 

 sin, under command of Captain J. G. B.iker. Oar thanks are due to 

 the officers of the Moccasin, who were very courteous, and gave us all 

 the facilities within their power for carrying out our investigations suc- 

 illy. Without this important assistance we should have remained 

 in complete ignorance of the temperature and peculiar fauna of the 

 deeper waters off this shore, for the localities were too distant to be 

 reached by means of the steam-launch or sail-boats. 



The examination of the bottom was done by means of dredges of 

 various sizes, constructed much like those in general use for this pur- 

 pose; by "rake-dredges'' of novel co istruction, consisting of a heavy 

 A-shaped iron frame, to the arms of which bars of iron armed with 

 long, thin, and sharp teeth, arranged like those of a rake, are bolted, 

 back to back; a lectangular frame of round iron, supporting a deep 

 and tine, dredge-net, follows just behind the rake to receive and retain 

 the animals raked from the soft mud or sand by the rake; a trawl-net^ 

 with a beam about fourteen feet long, made of stout, iron gas-pipe, and 

 Laving a net, tine toward the end, about forty feet deep, and provided 

 with numerous pockets; "tangles,' 7 consisting of an A-shaped iron 

 frame, to which frayed-out hemp-ropes are attached. The best form 



