PRODUCTION ON THE AMERICAN CONTINENT. 



105 



poration is so retarded that it produces decay at the point 

 of puncture, the effect of which is a black spot, known as 

 mould; and, when the lice are in sufficient numbers, the 

 strobiles will be found to be almost entirely black inside, 

 and are then nearly worthless. This and other causes have 

 lessened the vitality of the vine to such an extent, that 

 1200 to 1500 Ibs. per acre is now a large yield, and the 

 average yield will not exceed 600 to 800 Ibs. per acre. 

 The crop of the entire State of Wisconsin for 1874 was from 

 17,000 to 20,000 bales, not over about one-half what it was 

 in 1868. The cultivation of hops is, however, allowed to 

 be more remunerative than any other class of farming, when 

 followed for a succession of years. 



CANADA.-^-Before 1852 Canada did not grow enough hops 

 for her own consumption, for she imported 37,653 Ibs. in 

 1850, and 16,694 Ibs. in 1851. The growth in 1852 was 

 but 224,222 Ibs. The frosts there frequently kill the 

 plants. It was only in 1848 that hops began to be exported, 

 42,978 Ibs. having been shipped in that year. 



In 1849 the shipments were 24,687 Ibs. and nine packs, 

 valued at 387Z. The following have been the shipments 

 from Canada for some few other years : 



