20 
the ether tube should be slightly the longest, otherwise the 
ends become stopped with ice, and I find it better that the 
ether tube should be somewhat larger than the water tube* 
The bore of the tubes must be very small, but this is not 
sufficient, for unless the glass is very thin the spray will not 
be finely divided. Both the ether and water are forced 
through the tubes from bottles by connecting the interiors 
of these bottles with the bellows, and the quantities of ether 
