Section through A B. 



A PROPOSED DIVING-CHAMBER SUPPLIED WITH COMPRESSED AIR TO BE USED IN SUBMARINE EXPLORA- 

 TIONS. — La Nature. 



A PIECE OP ANCIENT I'EBU 



La Nat are 



The leaf-butterfly, flyino and alighted.— Science monthly. 



Meteorological and chemical laboratory on Pic du Midi f<|I 

 atmospheric phenomena. — Science et nature. 



SELECTED ILLUSTRATIONS EKOM< 



