264 CHINESE HUSBANDRY. 



The fruit grows at the junction of the leaf with the stalk. It is 

 at first green and small ; when ripe, of the shape of a pear, and 

 of a purple colour ; taste sweet. The fruit may be gathered and 

 eaten." 



The drawings, in this work, of some four hundred and sixty 

 plants, however inferior to our own in execution, might very well 

 serve, in combination with the appended names and descriptions, 

 to procure specimens of the plants, of which many must be new. 

 The localities are often, and indeed generally mentioned. 

 Portions of the work might be advantageously translated in detail ; 

 but two circumstances are essential. The translator must have 

 leisure for the task ; and he must be resident in China, as many 

 points would require elucidation on the spot. 



XIX. — On the Vine Mildew. By Hugo Von Mohl. 

 Translated by the Kev. M. J. Berkeley.* 



(Third Memoir.) 



In a former memoir {Bot. Zeit., 1852, No. 33) I have described 

 the phenomena which are presented by the Vine-mildew during 

 the first weeks of its appearance in June, and have deduced from 

 their successive development the inference, that the disease is 

 purely a consequence of the baneful influence of the parasite 

 upon the Vine. I take occasion now, in order to complete the 

 picture presented by the diseased Vine, to represent the 

 condition of the plant, in the second half of the summer up to 

 the close of the period of vegetation ; and this, as it appears to 

 me, will afford further proof against the notion that the disease 

 is independent of the fungus. My residence in the Southern 

 Tyrol afforded me unhappily the most perfect opportunity for such 

 investigations, since the disease not only was so widely diffused 

 that it was impossible in the neighbourhood of Bozen, during the 

 latter part of summer, to find a single leaf or bunch which was 

 not, when examined by a lens, overrun by the threads of the fungus, 

 but at the same time was so severe that the entire vintage was 

 destroyed. 



I have remarked in ray second memoir that the vegetation of 

 the Vine, both before and after the appearance of the disease, has 



* From Botanischc Zeitung, March 3, 1854. 



