NO. 



LAXliLEV MEMOIR ON MECHANICAL FLIGHT '_'!• 



pipes were soon covered with a thick layer of ice, and the free exit of the escap 

 big gas was prevented. 



Such difficulties are to be expected with this material, but here they were 

 enhanced by the small scale of the construction and the constant demand for 

 lightness. And it was found to be very hard to fill the small reservoirs intended 

 to carry the supply for the engines. When they were screwed to the large case 

 in winch the liquid was received and the whole inverted, the small reservoir 

 would be filled from one-third to one-half full, and nothing that could be done 

 would force any more liquid to enter. 



In view of these difficulties, and the objections to using a heater of any sort 

 for the gas, as well as the absolute lack of success attendant upon the experi- 

 ments of others who were attempting to use liquid C0 2 as a motive power on a 

 large scale elsewhere, experiments were at first temporarily and afterwards 

 permanently abandoned. 



The above experiments extended over nearly a year in time, chiefly during 

 1892, and involved the construction and use of the small aerodromes Nos. 1, 2, 

 and 3, presently described. 



