The method of hatching Rainbow Trout is very interesting. At government hatching stations a large number of males and females are kept in ponds for breeding purposes. When ready to spawn the eggs are easily taken from the female by gently pressing on the ventral surface of the body. After fertilizing them with milt taken in a similar way from the male they are placed in wire trays in wooden troughs through which there is flowing a current of water. In water of 50 degrees F. the eggs will hatch in from forty-two to forty-five days. A female weighing one-half to one and one-half pounds will yield from five hundred to eight hundred eggs. One from two to four pounds, two thousand five hundred to three thousand eggs. When the eggs are partly hatched they may be carefully placed in trays and kept free from injury, and packed in ice and sent to any part of the country. In this way they are often sent across the continent, also to Europe, Brazil and Japan. The cool temperature stops the hatching, which will begin again as soon as placed in water of suitable temperature. The fact that so many eggs can be taken from one female and a very large per cent (eighty-five per cent or more) hatched makes it possible to plant, in suitable streams, a large number of young fish each year. If the eggs were deposited in the stream by the fishes themselves the greater number would be eaten by young fishes, crustaceans, insects, etc. Here is a case where man is able to assist mother nature, and to preserve and widely distribute some of our most useful fishes. The Rainbow Trout is receiving much attention and yielding profitable returns. It will always give the angler an opportunity to display his highest skill, and afford a fair recompense for the toil of fishery. Seth E. Meek. DAY AND NIGHT. Day is a snow-white dove of heaven, That from the east glad message brings: Night is a stealthy, evil raven, Wrapped to the eyes in his black wings. Thomas Bailey Aldrich. THE GEOLOGICAL SUCCESSION OF FISHES. In discussing this subject it will be necessary to say something about the geological history of the earth. Each geological age had its own peculiar fauna, and to write about any part of it means that we must know something about the particular geological age in which the animals under consideration flourished, and something of the earth's previous history.