226 THE AMERICAN MONTHLY [Aug. 



arc of 90.° The carrier may also be lengthened or short- 

 ened according to need. The quadrant through which 

 it moves corresponds with the left anterior corner of the 

 support. The height of the boxes when closed is twen- 

 ty-nine and one-half inches. The outer angles of the 

 inner box are beveled so as to measure half an inch 

 across, and strips of wood are set into the inner angles 

 of the outer box so as to form sliding ways for the move- 

 ments of the inner one, contact being at the angles only. 

 The double, triangular top of the support is twelve and 

 a half inches upon each of its sides and one inch thick. 

 It projects three-fourths of an inch beyond the sides of 

 the inner box so as to be flush with the top of the outer 

 one, forming with the latter a cap to the support. Its 

 upper and under layers are each made up of three trian- 

 gular pieces of wood, (see Fig. 1) arranged so that the 

 grain is parallel with the outer edges, to prevent warping 

 and splitting. Each of the layers is one-third of an inch 

 thick and the space between them for the sliding lamp- 

 carrier measures the same. The layers are held apart by 

 three pieces of wood placed as represented in the un- 

 shaded parts of figure 2, which also shows the mechan- 

 ism of the lamp-carrier, the shaded area indicating space 

 traversed by it in its movements. The piece of hickory 

 of which the lamp-carrier is made is fifteen inches long, 

 one and one-half inches wide and scant one-third of an 

 inch thick. A slot half an inch wide and eight inches 

 long is cut in the carrier, as shown in figure 2, and a 

 screw which passes through the top of the support en- 

 gages in the slot, guiding the movements of the carrier 

 and hold it in place. The lamp used with the stand is 

 the " Acme." A slot one inch long and three-eights of 

 an inch wide is cut in the projecting end of the carrier, 

 (see figures 1 and 2). In this, the upright rod of the lamp 

 is fastened, as shown in figure 3, making it easy to fix 

 and to remove the attachment. The lamp has universal 



