A :.l 



n<\. 



he rodder serving affldently a* a jruidr. than the air. depending on th* proprllrr to draw it 

 the main |*ru of the upaanl. UY , c .f 



afralane. Srrrrml 



framework. *iul ni. of bamboo, *ah 



A as 10 Mh M/.-I that he is 



ui Ming a larger one, designed to carry n 

 A ill havr ul. ut 23 yardaof fturface, <-m|>: 

 a 4i-horte-pow< : > designed to weigh 



\pril 

 20. 1807. what h. >tyU a sky . 



a balloon of peculiar form shaped so as to 

 r power being a 



man centrally suspended, so that h.- may operate 

 IM.HI f,.,.t aii.l han.l oranlu : r .< / ng .1 pro- 

 peller placed forward. Tin- |>r..j.-ll. r - <>f 



AM area 



f a 



heliu- only serves as a surface, 



.ut kMn the pMti --f tb CnuM m p. ritkia M\- rs 



began hi> ;!.-. -f all 



,- pin of k 



i bent ailapti-.i to trnvt-1 a. 



arrived at a formula 



that enable* him to |.r<lu- the very bet form for 

 r; ami though he has construct*! th.- 



nula ho always secures a 

 makes TOod headway against the w.n-1. Ho 



ts his apparatus so that it is slightly heavier 





iniV 



operated from an eccentric. thai the? 



on one side, and were leathered on the rise. 



I . ', 



. 



ftflrtof 



mented with a jcrt-al variety of 



mall models, lie has 

 numerous msohenirai bird*, drireo by atotors of 

 twisted robber that n>< 



t..-- : ft, : - i.:, :.,..-. - ' - 



They can be made to fly ejeessmf ally in wiods of oat 

 more than 7 miles an hour. One of hi* largrr 



: - ;.' '".. 



carrying a onodensing sogtns of two fifths horn* 

 power. It presented a euriaot of 14 



have done better had not the 



earn in its career. 



'Ih.-n- i* an 



afronaotical society io 



on,- in BotftOO,thl latt.- r k -f...,,- - .'. f r. 



huh wweaU .:. Ucof> .1. 



D 





1808. The society pnblbhe* an -AnimaT the tni 



A. A monthly poo- 



.. v -. :..'.. - 



tare Channte, in which he elaborates and explaiiis 

 all the modern theories and principles devwJond. 

 and describes meet of the lyJoTiiijCiti ntSKS 





within the part fifty 

 n articles cone 

 rlu.i.4i .IrnvM fn-tn hi- m^t,^!.- nv t..i ll-.rvn 



an UM tabjei M.IX S'atmrs 

 and Artificial Fl u-ht ." y* : - I hare found that if 

 only desires to lift a large load in proportion to 

 es mar be made rerVbol low on 



the area, the planes may H made very notiow on 

 .oath d, n one considers the 



... of eerew throst, I find it advisable thai 

 aoes should be as thin a. Double and the un- 

 der side oeariy flat.** Octave Chanvta says of the 



aearb s^L" " '- < ' ! 



oooditioos of sailing flic There most 



wind, alt hough it maybe light. . No 

 whatever is needed when under way. 3. The 



