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propellers. The machine was built by Lawrence Hargrave, of 
Stanwell Park, Clifton (near Sydney), New South Wales, who has 
built eighteen experimental and successful flying machines, of 
which this is No. 14. As preliminary experiments for the construc- 
tion of a full-sized flying machine, on March 31, 1892, an experi- 
mental test was made with this machine, and at a pressure of 250 
pounds in the main tube, it flew 312 feet in nineteen seconds, forty- 
six double vibrations of the wings, dead level flight, 
N"o. 1 1. — Models of double and single propellers for vessels; 
also, hull of tug boat. 
Oil the Walls are hung a series of drawings, photographs 
and prints of the first propulsion by steam on water. Photo- 
graphs of river, lake and ocean steamers, including relics of 
advertising posters in early days, form an interesting part of this 
exhibit. 
HALL 39. 
HUMAN BURTHEN BEARERS. 
In the collection of Human Burthen Bearers are found 
life-size figures and models illustrating the primitive methods of 
transportation from widely diversified sections of the world, dem- 
onstrating the slow progress made in the manner of transporting 
goods and the wonderful endurance shown by the people of these 
countries. 
Case 1. — Life-size figure representing street scenes in Con- 
stantinople, Turkey; street porters, transporting cases destined foj 
the World’s Columbian Exposition. Fire sergeant and original oi 
lire extinguisher, chair carriers, and sedan chair of a wealthy 
Turkish lady. Water, milk, and bread peddlers. 
Case 2. — Life-size figures of burthen bearers from South 
America. Indian carrying a Silla, or traveling chair, in which is 
seated an American on his way over the mountains to Bogota, the 
capital of Colombia. Two Indian Cargadores, male and female, 
transporting goods from Guayaquil to Quito, capital of Ecuador. 
No. 3.— Sedan chair used by ladies of Bogota, Colombia, 
South America. 
