lamp was used })y the Latin races to-day. Illustrations were 

 aiioi-^h'd of these "classic lamps in contras't with the lamp still 

 usod by th(^ KMjuimaux, anrl with those improved lamps of to-day 

 whos(! illuminating power is fifty times greater. Little alteration 

 in foi'm was made in the middle ages. In the 17th century minor 



consisted only of an oil vessel with a rush wick, or a piece of 



of rr\ohitioii. the real develoi)ment of the modern lamp dated. 



lamps for the burning of 

 table oils were next mentione 



The changes necessary i 



: features were retained in the lamps of to-day. The 

 ling stage of the lecture dealt with the various forms of 

 perm, whale, colza, petroleum, &c., and their diri'erent 

 :^s, the discovery of liquid kerosene and of keiosene shale, 

 L America and New South Wales. The preparati(m of the 

 n shale as carried on in this colony was described ; first 

 .riiuti\e distillation of the shale, and afterwards the 

 :i;d distillation of the crude oil. The evolution of the 

 1.' I.n.ip^ was made plain to the audience by means of a 

 r of illustrations and examples, showing each progressive 

 f improvt-ment. The es.setitial features of modern lamps — 

 \ e.-,sel or fount, the burner, the wick, the air draught— 



f's, shades, stands, suspenders, lace and paper ornaments 



The l(;cti 



on of the wi(;k which is in 1 

 L tube of thin sheet metal, c 



