THE twenty-ninth annual report of the National Research Council of Canada, 1945-46 (Pp. 65. From the offices of the Council, Ottawa), includes the report of the President, together with reports of the Directors of Divisions, the financial statement and details of scholarships awarded. Among the outstanding developments in 1945-46 mentioned in the President's report are the investigations relating to atomic energy, the release of information on radar research, the design and construction of a plywood tailless aircraft and the development to the pilot -plant stage of a process for butylene glycol from wheat. Gauge inspection work was brought to a close in September 1945, and a building research conference laid plans for co-ordinating studies and initiating practical schemes for the improvement of housing in all its branches, including construction, plumbing, heating, ventilation, lighting and the planning of housing projects with regard to their economic and social aspects. Much work undertaken for the Services as a war measure will be continued in peace-time, but with industrial and commercial applications ; for example, applications of radar as aids to air and sea navigation, medical researches on the control of infectious diseases, studies on shock and blood substitutes, the development of plastic prostheses for artificial limbs, studies on heat-retaining properties of textiles used in clothing, shrink resistance of woollens, particularly socks, and wearing qualities of leathers and leather substitutes used in boots.