Good Books

Microcosmic salt (Chem.), a white
crystalline substance obtained by mixing solutions of sodium
phosphate and ammonium phosphate, and also called hydric-sodic-
ammonic-phosphate. It is a powerful flux, and is used as a
substitute for borax as a blowpipe reagent in testing for the
metallic oxides. Originally obtained by the alchemists from human
urine, and called sal microcosmicum.

Mi`cro*cos*mog"ra*phy (?), n.
[Microcosm + -graphy.] Description of man as a
microcosm.

Mi`cro*cou`lomb" (?), n. [Micro-
+ coulomb.] (Elec.) A measure of electrical
quantity; the millionth part of one coulomb.

Mi`cro*cous"tic (?), a. [Micro-
+ acoustic: cf. F. microcoustique,
micracoustique.] Pertaining, or suited, to the audition
of small sounds; fitted to assist hearing.

Mi`cro*cous"tic, n. An instrument
for making faint sounds audible, as to a partially deaf
person.


Pages:
774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798