With like completeness, when Dr. E. Palmer was exploring for the museum the nitre-caves in Northern Mexico, anciently occupied as places of human sepulture, he sent with the "mummies" extracted from them a full series of such natural products of the vicinity as would enable the museum to exhibit the leaves, fibres, and other vegetable productions from which the cloth, baskets, and so forth were constructed by the people who placed their dead in the caves. Dr. Palmer also sent a full set of the rude apparatus by which the present Indians of Mexico make their cactus-cakes and syrup, from the thorn-tipped pole with which the prickly fruit is gathered to the great earthen colanders through which it is strained; also all the implements and utensils, the native still, etc., used in making _pulque_ and in preparing and weaving the fibre of the agave. To go with greater detail into the treasures of this remarkable collection, whose value is so great, not only historically, but in an educational aspect (since it is readily accessible throughout and instructively presented), is forbidden by the limits of space; but the temptation to transgress is strong. I have said nothing, for example, of the great series of crania, now many times larger than when Wyman printed his papers in the early reports. A portion of this collection has more recently been described by Mr. Lucien Carr, whose voluntary services as an assistant at the museum have been of inestimable advantage to it. I have alluded only incidentally to the department of ceramics, which contains what is unquestionably the most important lot of material ever brought together for the investigation of the history and progress of the potter's art on the Western continent, from the "cord-marked" potsherds of the shell-heaps to the fanciful creations of Mexico and Peru. It will be seen, then, to summarize briefly what this essay has said, that the trustees of the Peabody Museum have secured to the public a fire-proof building containing nearly four hundred thousand specimens illustrating human progress in the "childhood of the world;" and these have been placed under proper care and arranged in accordance with the demands of modern anthropological science. An instructive and attractive museum has been formed in this way, where, from time to time, free descriptive lectures are given by the curator, and whither students may go for special investigations with the assurance that, so far as America is concerned, they have access to the most important collections that have been brought together, while material for comparison with the antiquities of other parts of the globe is not wanting. ERNEST INGERSOLL. A NORTH-RIVER FERRY.