61 



wanted, not only because tliat is the place most favorable to tlie performance and con- 

 stancy of its action, but also because the oidium chiefly attacks the under side. 



It is a number of years since I have used it on our hardy vines, not finding any 

 occasion for it under proper management. Although useful, and perhaps indispensa- 

 ble under some circumstances, it must not be expected to go very far in compensation 

 for wrong treatment or neglect. The cost of the material, and labor of applying it, 

 will amount to but a small per centage on the value of a good croj) ; and it is not 

 unlikely that it will come into general use on a twofold consideration, for it will pro- 

 bably be found to be as effective against the thrips, which are an enemy much more to 

 be feared, in connection with our best new kinds, than the mildew, and can not, like 

 the latter, be done away with by the development of the strength of the vine and atten- 

 tion to its wants in cultivation. 



APPARATUS FOR APPLYING SULPHUR. 



A great number of appliances have been invented for the application of sulphur ; 

 two of the best are represented in the engravings. Plate No. 67 represents one by 

 M. de la Vergne, and plates Nos. 68 and 69 are by M. Grontier. The latter is, perhaps, 

 to be preferred for general use, although the advantages of the former are important 

 for the vineyard. 



That of M. de la "Vergne is the most simple. The curved tube is more than one 

 inch in diameter, and is covered at its outer end with fine wire gauze. The implement 

 has no valve, the air being admitted through the tube, and at going out, passes through 

 it by forcible expulsion, charged with the fine sulphur dust, by passing over the quan- 

 tity of it with which the instrument is to be kept supplied. 



Plate No. 83. 



Plate No3. 63 and 69. 



Plate No. 75. 



Plate No. 67. 



That of M. Gontier is more complicated in its structure. The sulphur is not 

 placed within the bellows, but in a little case with an upper and lower chamber. Into 

 the upper chamber the sulphur is put through an opening in the top that must be 

 firmly closed after the sulphur is put in. Some little bars are seen in the upper 



