Title: Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets
Identifier: cu31924090281373 (find matches)
Year: 1911 (1910s)
Authors: Comstock, Anna Botsford, 1854-1930
Subjects: Nature study
Publisher: Ithaca, N. Y. , Comstock Publishing Company
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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178 Handbook of Nature-Study eyes, placed almost on top of the head, that no one could help calling one of them "Johnny." A "johnny" will look at you from one side, and then as quick as a flash, will flounce around and study you with the other eye and then come toward you head-on so that he may take you in with both eyes; he seems just as interested in the Johnny out of the jar as is the latter, in the johnny within. The johnny darter has a queer shaped body for a fish, for the head and shoulders are the larger part of him; not that he suddenly disappears into nothingness, by no means! His body is long and very slightly tapering to the tail; along his lateral line he has a row of olive-brown W's worked out in scale-mosaics; and he has some other scale-mosaics also following a pattern of angular lines and making blotches along his back. The whole upper part of his body is pale olive, which is a good imitation of the color of the brook. The astonished and anxious look on the johnny darter's face comes from the peculiar position of the eyes which are set in the top of his fore- head; they are big, alert eyes, with large black pupils, surrounded by a shining, pale yellow line at the inner edge of the green iris; and as the pupil is not set in the center of the eye, the iris above being wider than below, the result is an astonished look, as from raised eyebrows. The eyes move, often so swiftly that it gives the impression of winking. The eyes, the short snout, and the wide mouth give johnny a decidedly frog- like aspect. Although he is no frog, yet johnny darter seems to be in a fair way to develop some- thing to walk upon. His pectoral fins are large and strong and the ven- T~, . , , , tral pair are situated I he lohnny darter. i _l j_i , very close to them; when he rests upon the gravel he supports himself upon one or both of these pairs of fins. He rests with the pectoral fins outspread, the sharp points of the rays taking hold of the gravel like toenails and thus give him the appearance of walking on his fins; if you poke him gently, you will find that he is very firmly planted on his fins so that you can turn him around as if he were on a pivot. He also uses the pectorals for swimming and jerks himself along with them in a way that makes one wonder if he could not swim well without any tail at all. The tail is large and almost straight across the end and is a most vigorous pusher. There are two dorsal fins; the front one has only nine rays; these are not branched and are therefore spines; when the fin is raised it appears almost semi-circular in shape. The hind dorsal fin is much longer and when lifted stands higher than the front one; its rays are all branched except the front one. As soon as the johnny stops swimming he shuts the front dorsal fin so that it can scarcely be detected; when frightened he shuts both the dorsal fins and closes the tail and the anal fin and spreads out his paired fins so that his body lies flat on the bottom; this act always reminds one of the "freezing" habit of the rabbit. But johnny does not stay scared very long; he lifts his head up inquisitively, stretching up as far as he is able on his front feet, that is, his pectorals, in such a comical way that one can hardly realize he is a fish.
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