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"A pressure-blower used to send a blast through screens upon which grain is falling to clean it from the chaff and dust; a winnowing-machine. It usually forms a part of a threshing-machine, or is used in connection with grain-elevators." -Whitney, 1911

Fanning Mill

"A pressure-blower used to send a blast through screens upon which grain is falling to clean it from…

Spear grass is a herbaceous grass often troublesome in gravel walks and on hard, dry soils. The general appearance of plants is often modified by climate, soil, and modes of cultivation. In this magnified pistil, we see the nectary, composed of one or two fleshy scales, and the germ, ovary, or seed-bearing portion of the pistil. The stamens seen in the same figure, consisting each of a bag filled with a fine powder or pollen, supported upon a stalk or filament which is analogous to the stalk or stem of a leaft. The bag hold the pollen, called the anther.

Annual Spear Grass

Spear grass is a herbaceous grass often troublesome in gravel walks and on hard, dry soils. The general…

"Broom-corn Millet: a, b, and c, views of the spikelet and glumes, or chaff; d and e, two views of the 'seed.'" -Department of Agriculture, 1899

Broom-Corn Millet

"Broom-corn Millet: a, b, and c, views of the spikelet and glumes, or chaff; d and e, two views of the…