PnpiiJdr Science Monthli/ 



855 



TRAP RECORDING WIRE. DECCfT 



OOOR DEVICE. NETTING SHEEP BLIND 



The sheep may balk as much as they like 

 but the endless belt carries them rapidly on 



Sheep May Not Like This 

 But It Saves Time 



THE thickness of sliceps' wool provides 

 an excellent lodging place for vermin 

 of all kind. This is undoubtedly warm and 

 comfortable for the %ermin, but the sheep 

 and the wool suffer from the unclean 

 presence. On sheep ranches it is the custom 

 to cleanse the stock several times with 

 vermin-destroying liquids before wool-cut- 

 ting season. 



J.J. Roherson, a sheep herder in Utah, 

 who is of an inventive turn of mind, 

 devised a machine which should simplify 

 the performance. In a recent letter to the 

 Popular Science Monthly, he writes: 

 "Conservatively, we cut down the cost 

 over one-third by dipping the sheep, to say 

 nothing of the saving in time." 



The friendh' and unsuspecting sheep, 

 which goes through his macliine, will 

 probably cherish a deep and distrust- 

 ing feeling towards man forever 

 after. The animal climbs a short 

 runway and emerges upon a swiftly 

 moving floor, which precipitates 

 him upon a trap-door that opens 

 assoon as it is stepped 

 upon. The sheep 

 drops suddeiiK- into a 

 pit filled with \erntin- 

 dcstroying licjuid. 



By the time the 

 sheep has collected its 

 befuddled wits sulili- 

 ciently to crawl out of 

 the pit upon the open 

 field, the vermin have 

 been completely ex- 

 terminated. 



The ingenious 

 feature of this appa- 

 ratus is the endless 

 conveyor which takes 



the animals along to the trap-door no mat- 

 ter how stubbornh- they resist — and sheep 

 are the most stubborn of all animals which 

 require dipping. Where one sheep goes 

 all go. That is the inventor's reason for 

 having a decoy sheep in a wire netting to 

 entice the others to go forward. 



A Heater for Use Over the Flame of a 

 Gas-jet or Kerosene Lamp 



FOR the small room that is not properly 

 heated, or to use for light cooking in 

 connection with illumination the de\ice 

 illustrated may prove advantageous. The 

 traveler or camper who needs a little hot 

 water for shaving or for a cup of coffee 

 will appreciate it also. It is constructed of 

 sheet-brass with an inner and outer dome. 

 When the inner dome be- 

 comes heated, a \acuum is 

 created, drawing the cold 

 air to it through the 

 openings in the outer 

 dome. The heat does 

 not pass through and 

 out at the top, but is 

 expelled in a down- 

 ward direction. It 

 can be used on top of 

 a gas-jet or over the 

 chimney of a kerosene 

 lamp. 



Although the con- 

 struction of the heater 

 is strong enough to ac- 

 commodate small 

 cooking utensils, the 

 amount of weight which it will sustain is 

 limited. The principal use for which it is 

 ntended is to supplement the' heat of the 

 furnace or other heating system. It will be 

 found especially useful in the bathroom. 



The heat may be util- 

 ized for cooking or 

 warming the air with- 

 out hindering the illu- 

 mination of the room 



