Library of Aboriginal American Literature, of which eight considerable volumes were published, each containing a work wholly of native inspiration, in a native tongue, with a translation, notes, etc. Fourteen other publications relate to North American languages north of Mexico, thirty-two to Mexican and Central American languages, and ten to South American and Antillean languages. Many of these articles were collected in 1890 and published in a volume entitled Essays of an Americanist. It was arranged in four parts, relating respectively to Ethnology and Archæology, Mythology and Folklore, Graphic Systems and Literature, and Linguistics. The value of Dr. Brinton's labors will be realized by all persons who know how rapidly things purely native American are passing away. =Metallic Alloys of Rich Colors.=--A remarkable alloy of gold seventy-eight parts and aluminum twenty-two parts, discovered by Messrs. Roberts-Austen and Hunt, has a characteristic purple color which can not be imitated; for if the designated proportions of the constituents are varied from, the base is entirely changed. The compound lacks somewhat in the qualities of resistance and malleability. The color is abnormal in that it partakes of none of the color features of its constituents, as is the case in most combinations of metals. Thus, the colors of copper alloyed with zinc or tin pass gradually from red to white, according to the proportions of the constituent metals. In the union of two metals of white or bluish-white color, like zinc, tin, silver, and aluminum, the color of the alloys is not perceptibly different from that of the components--that is, it continues white. The purple of the gold aluminum alloy is not, however, the only exception to this rule. Aluminum gives highly colored compounds with several other metals, even when the second metal is clearly white. In the experiments of Charles Marcot, of Geneva, in alloying aluminum with platinum, palladium, nickel, and cobalt, combination took place abruptly at red heat, with the development of an intense temperature and a partial combination of the aluminum; and when platinum is the second metal, an explosion is liable to occur. An alloy of seventy-two parts of platinum and twenty-eight of aluminum had a bright golden or yellow color, which varied under slight changes in the proportions of the elements to violet green or coppery red. The alloy is hard and brittle and of crystalline structure. The yellow form is stable, while the other forms decompose in a short time. An alloy of seventy-two parts palladium and twenty-eight aluminum is of fine coppery rose color, crystalline texture, hard and brittle, and suffers no change with time. An alloy of from seventy-five to eighty parts cobalt and twenty to twenty-five aluminum is straw-yellow, inclining to brown; when just formed it is externally hard and scratches glass, but is easily broken with a hammer, and falls to a powder in a few days. An alloy of