316 REPORT 



with a worm, tbroug\ which the oil is poured aud on to which the wick- 

 tube is screwed, as iu the figure, the lower part of the tube which enters 

 the reservoir being perforated. The shoulder above the screw is de- 

 signed to prevent the falling of cinders or fire into the kerosene. 



^'One of the simplest lam^js is that which I herewith illustrate (Plate 

 LX, Fig. 5). It has been extensively used and is a mere modification 

 and simplification of the Walker lamp. The reservoir is here soldered 

 to the center of the pan, and the wick -tube to the top of the oil reser- 

 voir. The oil is poured in through an opening near the edge of the 

 top of the reservoir." 



Other lamp-pans not materially better than those described have been 

 patented by Mr. J. E. Duke, of Xorristown, Ark., Mr. J. E. Stephens, 

 of Lone Star, Miss., Mr. C. E. Dudley, of Canton, Miss., Mr. E. Pitman, 

 of West Point, Iowa, Mr. G. C. Cranston, of South Bend, Ind., and 

 others, but with the examples described, a detailed account of all these 

 will hardly be necessary. 



Lamps in Motion will next be noticed. 



The Le Blanc Cotton-moth Destroyer. — "As a result of the observa- 

 tion that the moths that are flying in the field are not so readily at- 

 tracted by a stationary light as by one in motion, the two following 

 machines have been invented with a view of being drawn or dragged 

 through the field : The first of these is the Le Blanc cotton-moth 

 destroyer, invented by Mr. Auguste Le Blanc, of Louisiana, La. (pat- 

 ent ]S"o. 10102S,' March 22, 1870), and represented at Plate LXI, Fig. 

 0. The apparatus is mounted on wheels, A, and consists of a platform, 

 B, to which are secured a number of extensible posts, c, supporting a 

 roof, D, from which is suspended by a chain or rope the devices to ob- 

 tain the light. This device consists of the reservoir, E, which commu- 

 nicates through pipes, a and &, with a series of radial burners, F, 

 which are arranged so as to form a circle of about 8 feet in circum- 

 ference, though the dimensions may be increased or decreased. The 

 posts, c, are rendered extensible by being formed in two parts, c d, the 

 one fitting and sliding in the other. -A series of holes, e, are made, one 

 in the part, c, while a spring top or pin, /, is fixed to the #ther, d. By 

 this means the burners may be raised or lowered at pleasure. The roof 

 does not serve alone to shield the burners from rain, but, if painted 

 with a white paint or with any other sticky substance, also helps to 

 attract and destroy the moths. In order to use this machine effectually, 

 Mr. Le Blanc suggests that the cotton should be planted so as to leave 

 at intervals, say, of 2 acres, a space wide enough between the rows to 

 permit the machine to pass through. 



" The Fordtran Cotton-Moth Destroyer. — The second machine to be men- 

 tioned in this connection, invented by Mr. E. H. Fordtran, of Fliitonia, 

 Tex. (patent Xo. 196211, October 16, 1877)." It consists of a number 

 of lamp-traps hun^ on a cross-bar, supported and connected with a 

 horse by a pair of shafts, with their hind ends bent down to form run- 

 ners to slide upon the ground. The cross-bar can be raised or lowered 



