Marshall \Vard has directed attention to several points of their structure which bear out this view.
AuTH0RITIE5.Sachs, Lectures on the Physiology of Plants, translated by Marshall Ward; Vines, Lectures on the Physiology of Plants; Pfeffer, The Physiology of Plants, trans.
Causes of Disease, &c. Pfeffer, Physiology of Plants (Oxford, 1900); Sorauer, Treatise on the Physiology of Plants (1895); Bailey, The Principles of Agriculture (1898); Lafar, Technical Mycology (1898); Hartig, Diseases of Trees (I 894); Marshall Ward, Proc. Roy.
See FUNGI and BACTERIA; also Marshall Ward, Diseases of Plants (Romance of Science Series), S.P.C.K.; Massee, Text-Book of Plant Diseases (1899); Tubeuf, Diseases of Plants (London, 1897).
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