A Few Popular Facts about Diffusion.* 



By Llewellyn Jones, Engineer, Plantation Nonpareil. 



HAVE undertaken to place before you " A 

 few popular fafts about Diffusion ; with special 

 reference to its present position in Demerara." 

 Mr. Duncan, in his interesting and suggestive in- 

 augural address, called your attention to the Society's 

 records of the past, reminding you that many valuable 

 and instructive papers are stored for reference, relating 

 to a large variety of subje6ls connefted with the pro- 

 gress and prosperity of this colony; and this reminds me 

 that this is not the first time that the subjeft of " Diffu- 

 sion" has been brought before your notice as a Society. 

 In 1885, a paper advocating this process was read by 

 Mr. Matthey ; and in July, 1887, Mr. HOGG delivered 

 a le6lure on the same subject, with special reference to 

 Aska. In January of the same year Mr. Nevile 

 Lubbock gave a forecast of the possibilities of Diffusion, 

 and in 1890, he also contributed an interesting article 

 to Timehri, embodying a comparison between double- 

 crushing and Diffusion. 



Nevertheless, gentlemen, I think there is yet room for 

 further contributions towards the consideration of this im- 

 portant process, and I feel that I ought to be able to read 

 my paper to you this afternoon without danger of in- 

 curring the charges of plagiarism or redundancy. 



My predecessors have had chiefly to content them- 

 selves with a recital of results obtained in foreign coun- 



• Read before the March meeting of the Society. 



