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LEntered at the Post-Offlce of New York, N.Y., as Second-Class Matter.] 



A WEEKLY NEWSPAPER OF ALL THE ARTS AND SCIENCES. 



Sevknth Year. 

 Vol. XIV. No. 353. 



NEW YORK, November 8, i{ 



Single Copies, Ten Cents. 

 J3.50 Per Year, in Advance. 



THE WELLS LIGHT. 



Many of our readers may be familiar witli the old form of a 

 self-acting blast-lamp, for the use of alcohol, in which the alcohol 

 was first vaporized by the heat of the lamp itself, and then this 

 vapor, escaping under pressure, was burned. The object in this 

 old lamp was to produce a high degree of heat. The object in the 

 lamp we describe to-day is to produce a large amount of light. 



The tank P contains kerosene, which is forced in by the pump 

 till a pressure of about twenty pounds above that of the atmos- 

 phere is produced. This pressure forces the oil up through the 

 piping R, surrounding the flame, in which piping it becomes va- 

 porized ; the vapor escaping under the pressure ar lV,a.nd burning 

 with a brilliant flame, as shown. 



The flame is about two feet long, and is said to burn well un- 



protected except when a high wind is blowing, when a wind- 

 iprotector provided with the lamp allows all to go on well once 

 more. 



It will be apparent that a preliminary warming-up is necessary, 

 10 bring the piping around the flame to the proper temperature. 



before this lamp can be lighted. This is done by burning a little 

 oil in the dish C under the burner, or by a special lighting contriv- 

 ance which brings a hot flame to bear on the vaporizing parts of 

 the apparatus. As the lamp is primarily intended for out-door 

 illumination, even the use of the oil in the cup is unobjectionable. 



