THE WORLD'S ADVANCE 



189 



the coops are kept in the shade. With 

 the glass acting as a hothouse, the chick- 

 ens keep warm even in winter weather, 

 and the animal heat keeps them comfort- 

 able even though the top of the coop is 

 open a little for ventilation. 



The upper deck of the bridge will be 

 used for vehicles and foot travel. It 

 will have a roadway forty-five feet wide 

 and two fifteen-foot sidewalks. Four 

 street car tracks will cross the lower 

 deck of the structure. The concrete 

 tower pylons will be 145 feet above the 

 ground. 



A DOUBLE-DECKED CONCRETE 

 BRIDGE 



The double-decked, high-level bridge 

 which is being built across the Cuyahoga 

 valley in Cleveland, connecting the east 



LIFE BELT ADJUSTED TO ANY 

 SIZED CHILD OR ADULT 



An adjustable life-preserver has been 

 designed in Chicago as one of the results 

 , of the passage of the Seaman's Bill in 

 the last session of Congress, which 

 governs the operation of steamships 

 on both salt and fresh water. 



Heretofore, there has been but one 

 size and shape of life belts for both 

 children and adults. Little travelers 

 were expected to have strapped 

 around their bodies a contrivance in- 



The Entire Structure, 

 with the Exception of 

 the Main River Span, 

 Will be of Reinforced 

 Concrete. 



Various Views of ; 

 Double Deck High Leve 

 Bridge that is Being 

 Constructed Across the 

 Cuyahoga Valley in 

 Cleveland. 



and west sides of the city, will be the 

 largest structure of its kind in the 

 country. Besides the Cuyahoga, 

 which is to be spanned at a height 

 to clear the largest lake steamers, the 

 bridge crosses over two low-level 

 bridges and the tracks of three rail- 

 roads the Erie, the Big Four and 

 the Baltimore & Ohio. 



The entire structure, with the excep- 

 tion of the main river span, will be of 

 reinforced concrete. There will be 

 twelve concrete arches averaging 140 

 feet in length, and the west and east 

 approaches will be 386 and 230 feet, 

 respectively. The concrete arches will 

 be reinforced with 6,000,000 pounds of 

 steel bars and 746,000 pounds of struc- 

 tural steel. The main river span will 

 contain 3,800 tons of steel. 



tended to be worn by the small, middle, 

 and heavy weight men and women. 



The new law requires a steamship to 

 be equipped with life belts for both 

 adults and children. In case of an emer- 

 gency, a child would have to search for 

 a child's belt, while the men and wom- 

 en passengers would have to seek the 

 sizes for grown-ups. 



The manager of a steamship line and 

 a mate on one of the boats have jointly 

 contrived an adjustable belt calculated 



