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10

eral deductions can be drawn, however, from the  study of the collections made in one season only, but it is proposed to continue the investigations during subsequent years, and a similar collection was made by the Grampus in the spring of 1888. It has not ^yet been carefully examined.

It may not be out of place in this connection to mention the set of temperature charts now in course of preparation for the Fish Commission, and covering long series of observations made at over 75 stations of the Light House Board and Signal Service. These stations are distributed along both the Atlantic and Pacific coasts of the United States and the Great Lakes, and some are located on important rivers. These observations are being reduced and plotted for the purpose of obtaining positive information respecting the water temperatures as influencing the movements of the principal commercial fishes, but it is expected that they will also prove of interest in connection with the study of all marine and fresh water animals and plants.

There have been several collaborators of the