MESSRS. GRIFFIN AND TATLOCK, LTD., Kemble Street, Kingsway, London, W.C.2, have issued a catalogue, No. 30 K, of biological and general apparatus and laboratory equipment for bacteriology, pathology, public health, chemistry and cognate sciences. In addition to laboratory fittings, and the ordinary chemical and physical glass-ware and apparatus and reagents, microscopes by various makers, microtomes, incubators, and blood and milk testing instruments are included. An extensive series of anatomical diagrams and models, osteo-logical preparations, and mounted microscopic objects are also listed. Practically all laboratory requirements appear in this catalogue, which is well produced and illustrated, and strongly bound.