* 
° 
is Barium, Strontium, and Calcium. = 297 
was placed, including a glass flask, of which the stem extended 
vertically through the neck of F. From a vessel V, with at¢ock 
intervening, a tube luted to the’ orifice of the flask extended to 
the bottom of it, so as to convey thither from V a current of ice- 
water, which, after refrigerating the bulk of the flask, could es- 
cape through the nozzle projecting, horizontally, from the neck, 
The inshouty Wet capsule D communicates through the 
rod with the negative poles of one or more deflagrators. The 
capsule L in like manner with the corresponding positive poles. 
a 
iy Fig. 1. 
b. i AL i a PUQUAANDANYNAULORUD LORI NT LTC INU 
A rodof platina reaches from some mercury in the capsule D, 
through the necks of the beds A and B, into a stratum of mercury, 
resting upon shoulder of the bell glass B, so as to be about a quar- 
ter of an inch beneath the flask. Several circumvolutions of 
Platina wire, No. 14, forming a flat coil, were interposed between 
the mercury and the bottom of the flask. The recurved ends of 
