Popular Scti'urc Moiilhli/ 



()47 



This forest of pegs connected by a web of strings gives us a map of geological formation of 

 area represented. The pegs and string indicate plainly sea level and depth and oil sand slope 



Making a Geological Map of Wooden 

 Pegs and Strings 



THIS map, which is made of wooden 

 pegs and strings connecting them, is 

 six feet and five inches wide and twenty 

 feet and six inches long and represents 

 the geological structure of several square 

 miles of oil land in California. 



It is claimed that, by glancing at 

 the map one can tell the depth 

 of any well, its exact location, 

 the thickness of the various 

 strata found in drilling, the 

 location of the spots where 

 oil and water were found, 

 etc. The pegs are painted 

 white and have colored 

 rings indicating the 

 geological formations, 

 sea level and depth. 

 The strings connect- 

 ing the pegs indicate 

 the slope of the oil land, 

 which is about two hun- 

 dred and fifty feet deep 

 on the west side of the 

 fields and three thousand 

 two hundred and fifty feet 

 on the east side, three 

 miles distant. 



A^ 



This chain visor is designed to pro- 

 tect the eyes from flying splinters 



Chain Armor to Protect the Eyes 

 from Flying Splinters 



N ingenious improvement has re- 

 cently been made to the already 

 familiar steel shrapnel helmet in use 

 "over there." It is designed to protect 

 the eyes and the upper part of the face 

 from splinters of wood, stone, sand and 

 metal, thrown up by exploding shells. 

 The new device is merely an 

 adaptation of the chain doors 

 which have been introduced 

 into metal, chemical and 

 glass works in recent years 

 to protect the workers 

 from the heat of the 

 furnaces and the 

 splashes of molten 

 material. It consists 

 of a fringe of sepa- 

 rate short lengths of 

 fairly heavy chain, 

 which effectively ar- 

 rest the flying particles. 

 On account of its loose- 

 ness, it does not seriously 

 interfere with the vision. 

 Many cases of blindness 

 among soldiers abroad are 

 due to flying splinters. 



