Hydro-orygen Blowpipe. 37 
Art. VI—On certain Improvements in the Construction and 
Supply of the Hydro-orygen Blowpipe, by which Rhodium, 
Tridiu he Osmiuret of Iridium, also Platinum im the 
large way, have been fused ; by Ropert Hare, M.D., Professor 
of Chemistry in the University of Pennsylvania. (Commu- 
nicated by the Author. ) 
posure of lime to the flame ; 
words were, “the eyes could not sustain the one, nor the most 
refractory substances resist the other.” ‘The intensity of the 
light was still more insisted upon by Silliman. — 
