304 



THE WORLD'S ADVANCE 



an error of one sixty-four thousandth of 

 an inch would not bother him. 



A MEMORIAL IN THE SKY TO 

 AVIATORS 



The citizens of Mill Valley, a town at 

 the foot of the famous Mount Tamalpais 

 which overlooks San Francisco Bay, have 

 chosen a novel place to locate a memorial 

 to the nation's heroes of the air. On 

 Decoration Day they unveiled a gigantic 

 monument to the airmen at a point three 

 thousand feet above the place where 

 Beacaey, the dare-devil bird-man, recent- 

 ly met his death. 



are conveyed from the truck by elevator 

 to the third floor, where they are emptied 

 and placed upon the upper end of this 

 slide. When the entire truckload of cans 

 are upon the slide the trap door is opened 

 and the cans naturally start down the 

 chute, which is provided with steel tracks 

 and guide rails. At the bottom the cans 

 run upon a long platform, from which 

 they are taken by the employee who a 

 few moments before loaded them upon 

 the elevator 



It takes but five or six minutes for 

 these cans to make the return trip from 

 the truck to the third floor and back. 

 This spiral slide is thirty feet in height 

 and about twelve feet wide. 



A MILKMAN AND HIS SPIRAL 

 CAN SLIDE 



The spiral can slide is one of the latest 

 features invented for use in connection 

 with creameries. It is used to convey 

 empty cans from the third floor of a 

 creamery to the ground floor. The cans 



Much Time in the Handling of Milk Cans is Ef- 

 fected with the Use of a Spiral Can Slide. 



MINIATURE SCENIC RAILWAY 

 WITH CARS CARRYING NUTS 



Designed to show the ability of the 

 boys in the mechanical department of the 

 Kern County (California) High School 

 and to present the various kinds of nuts 

 raised in the county in a novel and pleas- 

 ing manner, the miniature scenic railway 

 operated as a part of the exhibit of that 

 county in the California Building at the 

 San Francisco Exposition affords much 

 amusement to visitors. The entire struc- 

 ture stands iQ l /2 feet high and is made 

 of strap iron and bolts, while the decora- 

 tions are formed of the different kinds of 

 nuts grown in the county, walnuts, pea- 

 nuts, almonds and pecans, while the three 

 cars which are operated upon the track 

 are also loaded with nuts. A small elec- 

 tric motor operates the lifting device, 

 consisting of a chain drive, which pulls 

 the cars up the steep incline. In the ac- 

 companying photograph one of the 

 loaded cars is shown just at the top of 

 the incline, while another is seen on the 

 dip in the second circle of track. 



The Indians living near the celebrated 

 Messa Verde in southwestern Colorado 

 have predicted that the Government tele- 

 phone line through that section will be 

 destroyed. The Indians believe that the 

 spirits of the ancient cliff dwellers will 

 attack the telephone line, which passes 

 near the deserted cave habitations. 



