BULLETIN OF THE UNITED STATES FISH COMMISSION. 217 
54. RESULTS OF INVESTICfATIONS BY THE SCHOONER GRAMPUS 
ON THE SOUTHERN MACKEREL CJROSJNBS IN THE SPRING OF 
1887. 
By ©. E. COEL.INS, T. H. BEAN, aiidl MCHARD RATHBVN. 
The report on the investigations of the Grampus consists of three 
parts. The first is a narrative by Oapt. D. E. Collins, who was tem- 
porarily in command of the vessel, stating the objects of the cruise, 
the equipment for fishing and research, the directions and distances 
sailed, the conditions of the air and water, the movements and catch 
of the fleet, the occurrence of mackerel and other important fishes and 
of the food of fishes, the success or failure of various kinds of bait and 
fishing apparatus. The Grampus , while cruising frequently with the 
mackerel fleet, was engaged also in independent observations at* dis- 
tances of from 20 to 75 miles in various directions, always returning to 
give the masters of fishing vessels any information which might be 
useful to them. 
The second part, by Dr. T. H. Bean, is devoted mainly to notes on the 
fishes, cetaceans, and birds collected or observed during the voyage. 
The account consists principally of observations on the localities, move- 
ments, size, and food of the mackerel. 
The third part, by Mr. Bichard Rathbun, is a notice of the small 
surface organisms taken in the tow nets, and of the contents of mackerel 
stomachs. The general account of the character and distribution of 
the species was prepared by Mr. Rathbun ; the identification of certain 
groups was furnished by several specialists ; the amphipods, schizopods, 
cumacese, and decapods were referred to Prof. S. I. Smith ; the medusae 
to Mr. J. W. Fewkes ; the mollusca to Mr. W. H. Dali ; the insects to 
Mr. J. B. Smith. 
REPORT UPON THE OPERATIONS OF THE UNITED STATES FISH COM- 
MISSION SCHOONER GRAMPUS, FROM MARCH 15 TO JUNE 3, 1887. BY 
D. E. COLLINS. 
The work of collecting fish and fish-eggs for the hatchery at Wood’s 
Holl, Mass., closed on March 14, and the next day I received the fol- 
lowing orders : 
U. S. Commission of Fish and Fisheries, 
Washington, D. C., March 13, 1887. 
Sir : As soon as the Grampus can be got in readiness, you will, after taking on board 
at Wood’s Holl any material needed for the cruise, proceed to sea. Your object will 
be to investigate the waters adjacent to the North Atlantic coast from Cape Hatteras 
