1904.] GOODWIN ELECTROLYTIC CALCIUM. 387 



hammer and the rest dissolved off by leaving the pieces in 95 per 

 cent, alcohol over night. Some hydrogen was evolved but the loss 

 due to this cause was not very great. To keep the metal for a long 

 time it was put under oil, dipped in melted parafifin or simply put 

 in a dry stoppered bottle. 



An attempt was made to fuse several pieces into one big stick. 

 A two-foot length of one-inch iron pipe was threaded at both ends 



Figure 6. Figure 7, 



and a cap screwed firmly on one end. The inside was cleaned with 

 dilute sulphuric acid and washed with water, alcohol and ether, and 

 in it were placed about 300 grams of clean pieces of calcium. The 

 whole was heated in a wind furnace to a bright red heat, and on 

 looking down into the tube one could see the red-hot molten metal 

 which was quite fluid as shown by a thick iron wire used as a poker. 

 The upper cap was then screwed on, the tube drawn from the fire, 



