Whereas the soil used to be looked upon solely as a dead, inert material containing certain chemical substances which serve as food constituents.
Sarsaparilla still has a popular reputation as an "alterative," but it has been examined and tested in every manner known to modern medical science, and is professionally regarded as "pharmacologically inert and therapeutically useless."
At every stage the degree of tension requisite for existence is slackened, and the resulting element approaches more and more to " inert " matter.
8 and 9 cut out in paper to realize that extensive, inert, horizontal aeroplanes' in a flying machine would be a mistake.
Practically any vessel may serve as a receiver - test tube, flask, beaker, &c. If noxious vapours come over, it is necessary to have an air-tight connexion between the condenser and receiver, and to pro vide the latter with an outlet tube leading to an absorption column or other contrivance in which the vapours are taken up. If the substances operated upon decompose when heated in air, as, for example, the zinc alkyls which inflame, the air within the apparatus is replaced by some inert gas, e.g.