In addition to these is a series of photographs of heads enlarged to natural size, and including, whenever possible, a full face and a profile view of each individual represented. Flower took great interest in these photographs (as in the anthropological series generally), and made several experiments before finally deciding as to the scale to which they were to be enlarged. As facilities for photographing in the museum itself were at the time very limited, Flower enlisted the assistance of Dr. H. O. Forbes, Director of the Liverpool Museums, who entered enthusiastically into the project, and under whose superintendence the great majority of the reproductions from photographs now exhibited was produced; the arrangement being that Liverpool should have a copy of every photograph forwarded for reproduction. The races of mankind were arranged in the gallery according to Flower’s own scheme, fuller reference to which is made elsewhere in the present volume. Flower himself did not survive long enough to see the arrangement he had plotted out fully installed. Of late years, although some progress has been made in this direction, the series of coloured casts of the various human races has not increased so rapidly as Flower had hoped they would; but, nevertheless, a fairly representative series had been brought together, and there is, at present, ample space for additions when opportunities of acquiring new specimens occur. It should be added that Flower inaugurated the plan of making a collection of photographs of the various human races to be kept in the study series. It must not, however, be supposed that Flower, during his too brief tenure of the office of Keeper of the Zoological Department, by any means confined his attention to the mammalian galleries. On the contrary, he had with his own hands rearranged two of the cases in the bird gallery, namely, those containing the humming-birds and the woodpeckers; and shortly before his resignation he was planning the rearrangement of all the cases in this section; a work which since his death has been carried out to completion on the same lines. In this connection it is, however, only fair to state that in the obituary notice of Flower, published in the “Year-Book” of the Royal Society for 1901, full justice has not been done to his predecessors. The passage in question runs as follows:— “Every effort was made to give the specimens natural postures and natural surroundings. Thus, for example, the tree on which the woodpecker was at work, was cut down, the foliage modelled in wax, and all the surroundings carefully kept. Hovering birds were suspended by fine wire or thread. Birds making nests in holes, such as the Manx shearwater, sand-martin and kingfishers, either had the actual parts or a model of these beside them, just as the nests of the gannets and guillemots on the Bass Rock were shown with their natural environment.”