Johannes Walaeus. Zijn betekenis vor de verbreiding van de leer van de bloeds omloop [Johannes Walaeus. His significance in the recognition of the doctrine of blood circulation], by J. SCHOUTEN, Assen, Van Gorcum, 1972, pp. viii, 260, illus., Dfl. 46. Reviewed by Walter Pagel, 58 Millway, London, NW7 3RA. Walaeus [Jan de Wale] (1604-1649) was the first to confirm and amplify by original experim...