Obituary Notices. 
549 
Aerodynamics and the Internal Work of the Wind commanded 
wide attention. He made successful models of flying machines ; 
and, although the launching of his actual airship was unattended 
by success, unimpeachable photographic evidence showed that the 
failure was not in the vessel but in the launching apparatus. 
This Society cannot do other than endorse the strong simple 
words of the resolution come to by the representatives of the 
great Institution whose work he so long and so ably controlled 
— that the scientific world is indebted to Mr Langley for the 
invention of important apparatus and instruments of precision, 
for numerous additions to knowledge, more especially for his epoch- 
making investigations in solar physics, and for his efforts in placing 
the important subject of aerial navigation upon a scientific basis. 
