The air, of course, was dark and heavy, for want of that vigorous heat which clears and rarefies it; and the fruits were so crude and unconcocted that they pined away and decayed, through the chilliness of the atmosphere.

V. rarefy, expand, dilate, subtilize^. Adj. rare, subtile, thin, fine, tenuous, compressible, flimsy, slight; light &c 320; cavernous, spongy &c (hollow) 252. rarefied &c v.; unsubstantial; uncompact^, incompressed^; rarefiable^. 323.

"and a pleasant drink," it is more subtle and better, for the hop that rarefies it, hath an especial virtue against melancholy, as our herbalists confess, Fuchsius approves, Lib. 2. sec.

Piso, "a little after meat," "because it rarefies melancholy, and procures an appetite to sleep."

wonders the physicians of his time made no more use of it, because it rarefies and cleanseth: we use it to this purpose in our ordinary beer, which before was thick and fulsome.

"'The heat of the sun occasions the trade-winds, by rarefying the air at the equator, which causes the cooler and more dense part of the atmosphere to rush along the surface of the earth to the equator, while that which is heated is carried along the higher strata to the poles, forming two currents in the direction of the meridian.

Ostitis (a) Rarefying Ostitis (b) Osteoplastic Ostitis (c) Caries and Necrosis Treatment of Periostitis Recorded Cases of Periostitis B. Pyramidal Disease, Buttress Foot, or Low Ringbone Definition Symptoms and Diagnosis Pathological Anatomy Treatment Recorded Cases of Buttress Foot C. Fractures of the Bones 1.

The porous condition of the bone, which is here shown, is a result of a rarefying or rarefactive ostitis.

We shall next deal with the inflammatory changes occurring in the bones themselves, and shall consider them under (a): Rarefying or Rarefactive Ostitis, (b): Osteoplastic Ostitis, and (c): Caries and Necrosis.

(a) Rarefying or Rarefactive Ostitis.

A constantly ascending current is then established; and whenever cold air attempts to descend, the heat of the flue rarefies and drives it upwards.