106 Scientific Intelligence. 
In concluding this part of his memoir Magnus makes some re- 
marks on transparency which seem to us very suggestive. If 
I ] : rough, so that 
sity of the transmitted light is but little less than that of the 
parts of continuous spectra, all of which appear to depend upon 
only of the application of the theory to the widening of the bands. 
1 ide 
cumstance i connection with the well known influence of the mo- 
tion of a luminous pout upon the refrangibility of the emitted 
rays, makes it possible to explain the widening of the spectral 
snes ‘ 
