246 CULTURE OF T II E G II A P E. 



and many cases have been reported where it had a very 

 perceptible influence. The late A. J. Downing was accus- 

 tomed to recommend it as a specific. A great many cases 

 might be cited where the rot has disappeared, and there 

 has been entire exemption after the use of plaster. Cer- 

 tainly it must be of great service wherever there is a defi- 

 ciency of sulphur in the soil ; and it would be wise to try 

 its effect upon every vineyard. 



