AND CHEMISTEY OF HOPS. 7 



The hop bine has often been suggested as a paper material, 

 but no practical action has yet been taken on any extensive 

 scale in the matter. 



In 1838, George Kobert D'Harcourt included it in a 

 patent among various other substances ; and in the follow- 

 ing year Tljpmas MacGauran also patented paper-making 

 from hop bine, either by itself, or mixed with other suitable 

 material. Again, in 1854, Thomas L. Holt and William 

 Charlton obtained provisional protection for using the hop 

 stem or bine with other plants, either alone or combined 

 with rags. 



In 1845, a patent was taken out for using spent hops from 

 the breweries for paper-making. 



An invention of Mr. Henry Dyer, of Camberwell, recently 

 published, describes improvements in the manufacture of 

 pulp for paper-making, and consists in the application and 

 employment as materials for this purpose of spent hops or 

 spent malt from breweries or distilleries, either together or 

 separately, in combination or not with other materials, such 

 as cotton, linen, hemp, woollen or silk rags, or esparto, diss, 

 palm leaves, straw, wood pulp, jute, gunny, manilla, Indian 

 grass, and waste paper. 



The spent hops and malt, whether employed together or 

 separately, and with or without the other substances referred 

 to, are to be treated by the processes and machinery usually 

 employed for boiling, pulping, and bleaching the ordinary 

 materials used for paper-making, and when converted into 

 pulp may be at once made into paper, or compressed and 

 dried for sale as half-stuff. ... 



Instead of spent hops, fresh hops may be used, in the case 



