II 



llt'GH L. CALLENDAR AND MR. HERBERT MOSS 



..it a linn- lias,-, s.i that tin- omditions of'tlie experiment could be accurately followed, 

 .in. I any d-fvt in tin- working of the apparatus, such as the appearance of an air 



Fig. 6. 



Fig. 7. 



h - ' 



hih tnnperatures, immediately detected T. 

 typio.,1 , X;illlJ(lt . s , ;U1( , wi e 



the 



shown 



and 



