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A double falciform ejection of water vapour from under the kettlelid at both sides simultaneously. For what personal purpose could Bloom have applied the water so boiled? To shave himself. What advantages attended shaving by night?

Meyer describes the sand-hills of the Peruvian desert as perfectly falciform in shape and from seven to fifteen feet high, the chord of their arc measuring from twenty to seventy paces. The slope of the convex face is described as very small, that of the concave as high as 70 degrees or 80 degrees, and their surfaces were rippled.

The lower half of the ascending frontal convolution, the greater half of the sigmoid gyrus, the posterior third of the lower and middle frontal convolutions, the base and posterior end of the upper convolution, and the base of the corresponding portion of the falciform lobe were involved. The sensory and motor functions of the arm were retained in a relative degree.

Tschudi observed, in the same desert, two species of dunes, fixed and movable, and he ascribes a falciform shape to the movable, a conical to the fixed dunes, or medanos. "The medanos," he observes, "are hillock-like elevations of sand, some having a firm, others a loose base. On this side they are sloping, inside precipitous, and from fifteen to twenty feet high.

Thus, the crescent or falciform shape is described by all observers as more constant and conspicuous in these sandhills than in those of littoral origin; they tend less to unite in continuous ridges, and they rarely attain the height or other dimensions of the dunes of the seashore.