___ acid (H2CO3)

Usage examples of carbonic.

Phalaris and Avena the first true leaf, which is bright green and no doubt decomposes carbonic acid, exhibits hardly a trace of heliotropism.

There are two varieties of hardness, one of which is temporary, being due to the presence of carbonic acid gas in the water which holds the salts in solution and may be removed by merely boiling the water and thus expelling the gas when the salts are deposited, while the other is permanent and can only be removed by the distillation of the water.

We both silently contemplated the enzymatic breakdown of carbon dioxide to carbonic acid.

There the wort ferments under reduced pressure, the carbonic acid generated being removed by means of a vacuum pump, and the gas thus withdrawn is replaced by the introduction of cool sterilized air.

But an analogy is not an explanation, and why a few drops of yeast should change a saccharine mixture to carbonic acid and alcohol,--a little leaven leavening the whole lump,--not by combining with it, but by setting a movement at work, we not only cannot explain, but the fact is such an exception to the recognized laws of combination that Liebig is unwilling to admit the new force at all to which Berzelius had given the name so generally accepted.

In the lungs, the corpuscles give up carbonic acid, and absorb a fresh supply of oxygen, while in the general circulation the oxygen disappears in the process of tissue transformation, and is replaced, in the venous blood, by carbonic acid.

These vessels receive the blood and bring it into intimate contact with the tissues, which take from it the principal part of its oxygen and other elements, and give up to it carbonic acid and the other waste products resulting from the transformation of the tissues, which are transmitted through the veins to the heart, and thence by the arteries to the lungs and various excretory organs.

This is effected by the elimination of carbonic acid, which is expired or exhaled from the lungs, and by the absorption of oxygen from the air which is taken into the lungs, by the act of inspiration or inhalation.

The more nearly the composition of the external air approaches that of the expired air, the slower will be the diffusion of carbonic acid outwards and of oxygen inwards, and the more charged with carbonic acid and deficient in oxygen will the blood in the lungs become.

Vast extinct volcanoes, lava wildernesses, tumbled wastes of snow, or frozen carbonic acid, or frozen air, and everywhere landslip seams and cracks and gulfs.

The iron meteorites, besides metallic iron and nickel, of which they are almost entirely composed, contain hydrogen, helium, and carbonic oxide, and about the only imaginable way in which these gases could have become absorbed in the iron would be through the immersion of the latter while in a molten or vaporized state in a hot and dense atmosphere composed of them, a condition which we know to exist only in the envelopes of the sun and the stars.

In the presence of certain organic molecules it can form carbonic acids so nasty that they can strip the leaves from trees and eat the faces off statuary.

Although the leaves at a hasty glance do not appear green, owing to the purple colour of the tentacles, yet the upper and lower surfaces of the blade, the pedicels of the central tentacles, and the petioles contain chlorophyll, so that, no doubt, the plant obtains and assimilates carbonic acid from the air.

Dionaea, 301, 310, 313 , on Drosera filiformis, 281 Caraway, oil of, action on Drosera, 211 Carbonic acid, action on Drosera, 221 , delays aggregation in Drosera, 59 Cartilage, its digestion by Drosera, 103 Casein, its digestion by Drosera, 114 Cellulose, not digested by Drosera, 125 Chalk, precipitated, causing inflection of Drosera, 32 Cheese, its digestion by Drosera, 116 Chitine, not digested by Drosera, 124 Chloroform, effects of, on Drosera, 217 , , on Dionaea, 304 Chlorophyll, grains of, in living plants, digested by Drosera, 126 , pure, not digested by Drosera, 125 Chondrin, its digestion by Drosera, 112 Chromic acid, action on Drosera, 185 Cloves, oil of, action on Drosera, 212 Cobalt chloride, action on Drosera, 186 Cobra poison, action on Drosera, 206 Cohn, Prof.

The carbonic anhydrase phase regulator would be a good place to start.