on by hydrofluoric hardening and not the reducing process; but it adequately acid the tear is reduced to a nucleus. If several rather gives the meaning of the word, if this explanation be borne large tears be thus treated, and if the action of the acid be in mind.—Eds.] arrested at different… … so well understood that other in intensity. When the tear is thick enough an inert nu- bodies, "such as phosphorus, sul- cleus is reached, which breaks under a shock like ordinary phur, certain alloys, etc., experience on being tempered glass. interesting modifications, some of which have been…
