Inside the animal were found
tracheae, the digestic tube of an insect, and malpighian canals.
Finally, in June, 1880, Mr. Vayssiere was enabled to establish the fact
definitely that the insect belonged among the Ephemerids. Two of the
larvae that he raised in water became, from yellowish, gradually brown.
Then they crawled up a stone partially out of water, the carapax
gradually split, and the adults readily issued therefrom--the head
first, then the legs, and finally the abdomen. At the same time, the
wings, which were in three folds in the direction of their length,
spread out in their definite form (Fig. 2). The insects finally flew
away to alight at a distance from the water. The wings of the insect,
which are of an iron gray, are covered with a down of fine hairs. The
posterior ones soon disappear.
[Illustration: FIG. 2.--MAY-FLY (adult magnified 14 times).]
Perhaps the subimago in this genus of Ephemerids, as in certain others,
is the permanent aerial state of the female.--_La Nature_.
* * * * *
Connecticut is rapidly advancing in the cultivation of oysters. About
90,000 acres are now planted, and thirty steamers and many sailing
vessels are engaged in the trade.
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