374 PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
immediately sunk to 150° fahrenheit, nor could the skill of 
the fireman raise the heat higher, as long as the “ Shower” 
was in action. This mechanism, including the Fanner blast, 
was worked successfully on a practical scale before Lord 
Harris, the Governor of Trinidad, and several Members of 
the Legislative Council, in 1849, and those present satisfied 
themselves, lhat while the Shower was in full action and the 
evaporation at its quickest, the syrup could be handled with 
impunity. The importance of using cane-juice or syrup in a 
state of perfect purity is so great, that you will perhaps 
excuse me for adding a few words on this subject, and recom- 
mending to your careful examination an automatic or self- 
acting process for clarifying and cleansing cane-juice or other 
materials in the earlier stage of evaporation, It was borrowed 
originally from Cuba, and subsequently patented in Trinidad 
and Demerara. 
Tuesday , 8th June , 1869. 
R. J. Lechmere Guppy, F.L.S., F.G.S., &c., President, in 
the Chair. 
In the absence of the Secretary, Dr. Knaggs was requested 
to act in his place. 
The following Donations were announced : — 
“ Journal of the Society of Arts,” Nos. 834 — 839. Present- 
ed by the Colonial Government. 
“ Scientific Opinion,” Nos. 1 — 20. Presented by the Pre- 
sident . 
