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Fishes are sometimes classed, in accordance with the structure of their scale, into Ctenoid, Ganoid, Cycloid, and Placoid. This illustration is a Cycloid scale of the Carp.

Cycloid Scale of the Carp

Fishes are sometimes classed, in accordance with the structure of their scale, into Ctenoid, Ganoid,…

Fishes are sometimes classed, in accordance with the structure of their scale, into Ctenoid, Ganoid, Cycloid, and Placoid. This illustration is Ganoid scales of Dipterus.

Ganoid Scales of Dipterus

Fishes are sometimes classed, in accordance with the structure of their scale, into Ctenoid, Ganoid,…

"The most common and, for many purposes, the most convenient form of condenser is the Leyden jar. This consists of a glass jar, coated within and without for about two-thirds its height with tinfoil, and a metallic rod that communicates by means of a small chain with the inner coat, and terminates above in a knob or a disk." — Avery, 1895

Diagram of a Leyden jar

"The most common and, for many purposes, the most convenient form of condenser is the Leyden jar. This…

"Make alternate layers of manure and of sods three inches thick, piling one upon the other, until you have a heap of the shape."—Heinrich, 1887

Section of Soil Heap

"Make alternate layers of manure and of sods three inches thick, piling one upon the other, until you…

"In some places a series of strata A, having a certain dip, rest directly upon the eroded surface of another series, having the same dip." — Hinman, 1888

Uncomformable strata

"In some places a series of strata A, having a certain dip, rest directly upon the eroded surface of…