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Politics and Change in Developing Countries: Studies in the Theory and Practice of Development. Edited by Colin Leys. Cambridge University Press, 1969. Pp. ix + 289. Bibliog. Index £2.50. Agriculture and Economic Growth: Japan's Experience. Edited by Kazushi Ohkawa, Bruce F. Johnston, and Hiromitsu Kaneda. Princeton University Press and Tokyo University Press, 1970. Pp. xxii + 433. £6. The Sino‐American Joint Commission on Rural Reconstruction: Twenty Years of Cooperation for Agricultural Development. By T. H. Shen. Ithaca and London, Cornell University Press, 1970. Pp. xv + 278. Illus. Appendices. Index. £6.45.

A state similar to bronchial asthma was provoced in guinea pigs by intraperitoneal injection of ovalbumin followed by inhalation of ovalbumin-aerosol. Pulmonary impedance, the ratio of maximal esophagus pressure and tidal volume, was decreased significantly by treatment of rhodanid.