70 THE ANTARCTIC MANUAL. 
(1) Two portable electrometers, each with one steel wire for 
carrying match, one charging rod, and one electrophorus for charging 
the jar. 
(2) Six spare steel wires for carrying the match (three to go with 
each instrument). 
(3) Supply of matches ready made. (The slower the match burns, 
the better. If those supplied burn too fast, steep them in water and 
dry them again.) 
(4) White blotting paper and nitrate of lead to make more matches 
when wanted. (Moisten the paper with weak solution of nitrate of 
lead, and roll into matches with thin paste made with a very little 
nitrate of lead in the water.) 
(5) Six spare pumices (three for each electrometer); indiarubber 
bands to secure pumice in lead case. 
(6) Eight small stoppered bottles of prepared sulphuric acid (four 
for each electrometer). 
(7) Tin foil and fine wire, 
