magloon (maglon)

The speckled loon or red-throated diver, Colymbus septentrional is. [Prov. Eng.] magma (mag'ma), n. [NL., part which is amorphous or which has no decidedly individualized contours, so far as can be made out from examination of thin sections with the aid of a microscope. It is in such an amorphous homogeneous magma or ground-ma that the crystalline elements of many rocks are embedded. The term magma is also frequently used to designate molten or plastic material lying beneath the surface, which it is desirable to speak of, without any specific indication of its mineral character, in discu ing the phenomena of volcanism, metamorphism, etc. Carrying out this idea still further, he [Duroc her] propounded the theory that beneath the earth's solid crust there exist two magmas , the upper consisting of light acid materials, the lower of heavy basic ones; and he supposes that by the varying intensity of the volcanic forces we may have sometimes one or the other magma erupted and sometimes varying mixtures of the two. IMG:content-0069.png:[blocks in formation] It might be one of God's magnalia to perfect his own praise out of the weakne and imperfection of the organ. Jer. Taylor, Works (ed. 1835), II. 91.