760 



Popular Science Monthly 



CONTINENTAL piVjPe 



A 



Where tiiL ■.'..<y~ '■■ '■'' I'ttle raindrops part — westward 

 toward the Pacific, and eastward toward the Atlantic 



Marking a Point on the Continental 

 Dividing Range 



THE big sign shown in the illustration 

 was erected by the State of New 

 Mexico to mark an in- 

 teresting point of the 

 continental divide. It 

 stands near Corona, 

 N. M., on the trans- 

 continental highway, 

 and attracts much at- 

 tention from tourists 

 traveling over that 

 road. It marks a point 

 of the continental wa- 

 ter shed, and its posi- 

 tion is such that the 

 rainwater which falls on 

 the west side of the 

 sign flows toward the 

 Pacific Ocean, while 

 the rainwater falling 

 east of the 

 sign eventu- 

 ally reaches 

 the Atlantic. 

 Of course, 

 there are in- 

 numerable 

 such points 

 along the continental 

 divide, but only in a 

 few sporadic cases are 

 they marked for the 

 benefit of tourists. If 

 more points of interest 

 were marked in this way 

 it would add much to 

 the pleasure of travel. 



One Man Handles Col- 

 lapsible Form 



REMARKABLY clever 

 device has been placed 

 on the market and promises 

 to revolutionize the construc- 

 tion of concrete box culverts. 

 It is a collapsible metal 

 framework in sections, which 

 forms the support of the 

 wooden casing for the con- 

 crete. The set of forms for 

 the construction of a cul- 

 vert, thirty feet long, consists 

 of four sections or units, 

 which are entirely independ- 

 ent of one another. The frame, which is 

 shown in the accompanying illustrations, 

 is of iron, and adjustable laterally and 

 also vertically. Two sizes are adaptable 

 to thirty-nine different culvert openings. 

 One man can set up 

 and remove the forms. 

 The mechanism is 

 exceedingly simple and 

 easily operated. The 

 units are set up, the 

 casing of matched 

 boards placed over the 

 framework and the 

 concrete is filled in 

 around the casing. Af- 

 ter the concrete has 

 hardened, a pull at the 

 cross-bar causes the 

 top supports to fold up, 

 while a pull at the 

 center bar draws in the 

 side sills. This de- 

 prives the wooden cas- 

 ing of its support and 

 the boards separate 

 from the 

 concrete 

 and can be 

 removed, 

 clean, unin- 

 jured and 

 ready for an- 

 other job. 

 Trials of the 

 device have 

 shown that 

 it effects a 

 great saving 

 in every way. 



This new collapsible, sectional concrete form 

 can be handled by one man with perfect ease 



