312 DISEASES OF FIELD & GARDEN CROPS. [cri> 



10. That the mycelium of Artotrogus was not septate, as 



illustrated by us, but that it was like the my- 

 celium of Pythium vexans, D.By., i.e., in one con- 

 tinuous piece without septa. 



11. That our "bladders" were more like the oospores 



of the Peronospora of the vine or some Pythium. 



Many other minor objections were advanced. Keplies 

 will be found in Nature for 27th April and 25th May 1876, 

 and in various numbers of the Gardeners' Chronicle for 

 1876. A report from the pen of the Rev. M. J. 

 Berkeley will be found in the Gardeners' Chronicle for 

 1st April 1876, p. 436. Our original illustrated papers 

 were published in the Gardeners' Chronicle for 17th and 24th 

 July 1875. Micro -photographs from nature, of potato 

 oogonia, and antheridia were published by us in the 

 Quarterly Journal of Microscopical Science for October 

 1875. The first sketches made by us are at Kew, 

 and the more carefully finished drawings are in the 

 British Museum. A moderate, independent, and just 

 resume of the whole subject was published by "W. Peard, 

 M.D., LL.B., in the Journal of the Bath and West of 

 England Society and Southern Counties Association, vol. 

 viii., third series, 1877. 



For the discovery of the reproductive organs and 

 oospores of Peronospora infestans, Mont., the Royal Horti- 

 cultural Society of England awarded us their Knightian 

 medal in gold. 



Some time prior to 1881 Professor de Bary changed 

 his views in reference to the nature of Artotrogus, as in 

 the latter year he agreed with us in illustrating and 

 describing the organism as a true oospore, as supported 

 on septate mycelium, and with an antheridium in "local" 

 and not "anatomical" relation to the thread of the 

 oogonium, precisely as we originally illustrated it. 



The accompanying illustration, Fig. 137, enlarged 600 

 diameters, is copied from the Beitrage zur Morphologic und 

 Physiologic der Pilze, 1881, and it represents, from pi. 1, 



