This Collection, formed and arranged for the Department of Science and Art by Andrew Murray, Esq., F.L.S., is exhibited at the eastern end of the gallery, partly on the wall, and partly in glazed cases on the counter. It is intended to illustrate the ravages of such insects as are known to be destructive to alimentary substances, or that are noxious or injurious to man and domestic animals. Also, those insects known to be destructive to timber, or otherwise exemplifying the science of Entomology in its relation to Forestry. The Collection is contained in 42 cases, to which belong 31 framed diagrams and drawings. This Entomological Collection is yet incomplete, and may be considered as still in course of formation. ADULTERATION OF FOOD. The extensive employment of various substances for the Adulteration of Food has led to the formation of a collection of those more commonly employed. In Cases 97 and 98 these substances are arranged according as they have been obtained from the animal, vegetable, or mineral kingdom. They have been selected principally from the results obtained by Dr. Hassall, and made known in his work “On the Adulteration of Food.” The adulteration of _Milk_ with _Water_ is shown in Case 54. These examples are renewed weekly; and the use of the _lactometer_ or _milk measurer_, is also exemplified in the same case. The goodness of milk can also be ascertained by means of the microscope. The diagrams on the wall represent good cream, good pure milk, bad milk, and the curd of milk as seen under the microscope. * * * * * * * * * * * * * * * LONDON: Printed by GEORGE E. EYRE and WILLIAM SPOTTISWOODE, Printers to the Queen’s most Excellent Majesty. For Her Majesty’s Stationery Office. [4018.—5000.—7/72.] * * * * * * * * * * _The following Publications are on Sale at the Catalogue Stall_. CATALOGUE of the COLLECTION lent by SIR RICHARD WALLACE, BART. _Sixpence_. ALPHABETICAL INVENTORY of the FOOD COLLECTION. _Sixpence_. BRIEF GUIDE to the FOOD COLLECTION. _One Penny_. BRIEF GUIDE to the ANIMAL PRODUCTS COLLECTION. _One Penny_. SCIENCE DIRECTORY, with Regulations for Establishing and Conducting Science Schools and Classes. _Sixpence_. ART DIRECTORY, with Regulations for promoting Instruction in Art. _Sixpence_. * * * * * *** _For information as to instruction in Science and Art in the Schools established in the Eastern and North-eastern districts of London_, _see the end cover_. * * * * * Instruction in Science and Art in the Eastern and North-Eastern Districts of the Metropolis, in connexion with the Science and Art Department.