ADVANTAGES OF GAS LIGHTS. ^J 



to be dreaded from snuffs and sparks : a circumstance from 

 which I should think the Insurance Offices would be great, 

 advocates for its introduction also. 



I will also, if you think proper, send you a plain descrip- Drawing and 

 tion of a small apparatus sufficiently and easily explained, description of 

 that shall enable any man to put it up himself; for the thing promised, 

 is so simple, that with a few plain drawings and explanations 

 almost any man of common abilities may do it. It is often 

 the case, that things of great advantage and use to the com- 

 munity at large are kept back and as secret as possible by 

 individuals, who have had the good fortune to derive much 

 advantage from them : but if any thing useful can be intro- 

 duced for the benefit of mankind, that man is deserving of 

 thanks, who uses the best meahs nature has bestowed upon 

 him to disseminate its usefulness aboad. 



Dr. Cr. 



Yearly expense in Twenty weeks at eigh- 



coalsand man<£l8 4 teen shillings per week 



Interest on Forty for candles ^18 9 



Pounds 2 Oil and cotton for lamps 30 



Profits per year. . 30 6 Coaks worth • • 2 10 



^50 10 ^50 10 



I reckon nothing for the tar, setting it against any little 

 loss or accidents. 



I am. Sir, 



Your liumble servant, 

 Caroline Street, B. COOK. 



Birmingham, Nov. 22c?, 1808. 



REPLY, 



I Shall with great pleasure receive and attend to the draw- 

 ing and description offered by Mr. Cook, whose clear de- 

 scriptions of matters of fact possess a value, which needs not 

 the addition of my suffrage to recommend them. 



W. N. 



IX, 



