1104 



noticed on its brick walls. The Club dined at the ' George ' Hotel, 

 where, afterwards, various remarks were made in reference to the country- 

 examined and the objects seen, by the Rev. Canon Cradock, Mr. E. 

 Lees, V.P., and Mr. W. Mathews. Mr. Baxter exhibited specimens of 

 Udora Canadensis, now first found in Worcestershire, gathered by him 

 a few days previously in a marshy pond at Grimley. Mr. Lees infer- 

 red that it must have been brought down the Severn by the autumn 

 or spring flood, as his friend, the Rev. Andrew Bloxam, had seen it 

 growing in the Severn, at Shrewsbury, in the present spring. That 

 the plant was carried through the country by inundations, Mr. Lees 

 said was quite clear ; for during the late flood on the river Avon, in 

 July last, while the hay was floating on the water at Evesham, Mr. 

 W. Cheshire, jun., of Stratford, who happened to be there, took up a 

 quantity with a fork, and, floating under the hay, appeared numerous 

 stems of the Udora, which had thus been carried along by the impe- 

 tus of the hay coming in contact with it. The Udora would now, 

 doubtless, soon be common both in Worcestershire and Gloucester- 

 shire. The party retured to Kidderminster and Worcester, after a 

 long, but most delightful, day. 



British Association for the Advancement of Science. 



Sulphide of Calcium as a Remedy for the Grape Disease. 



A paper by Dr. Astley P. Price, * On the Employment of the 

 higher Sulphides of Calcium as a Means of Preventing and Destroy- 

 ing the O'idium Tuckeri, or Grape Disease,' was read. 



" Of the many substances which have been employed to arrest the 

 devastating eflfects of this disease, none appear to have been so pre- 

 eminently successful as sulphur, whether employed in the state of 

 powder or flowers of sulphur, or by sublimation in houses so affected. 

 Notwithstanding the seveial methods described for its application to 

 the vines, I am not aware that any had been off"ered in 1851, when 

 these experiments were instituted, by which sulphur might be uni- 

 formly distributed over the branches, and be there deposited in such 

 a manner as to be to some extent firmly attached to the vine. Three 

 houses at Margate, in the vicinity of the one in which the disease first 

 made its appearance in England, having been for the space of five 

 years infected with the disease, and notwithstanding the employment 

 of sulphur as powdered and flowers of sulphur, no abatement in its 



