Part,  Chapter

 1 1,7|     to be treated either with soda or lime. In fact, one or
 2 1,7|   useless, while treatment by soda would furnish, on the contrary,
 3 1,7|    would rather try to obtain soda. Was this difficult? No;
 4 1,7|    under the name of "natural soda." ~This obtained, the engineer
 5 1,7| engineer treated the fat with soda, which gave both a soluble
 6 2,8|      then cleaned by means of soda and potash, obtained by
 7 2,9|       simply sand, chalk, and soda, either carbonate or sulphate.
 8 2,9|     chalk, sea-weeds supplied soda, pyrites supplied sulphuric
 9 2,9|   chalk, forty of sulphate of soda, mixed with two or three
10 2,1| thoroughly washed in baths of soda, and, when sufficiently
11 2,6|     at the Chimneys in making soda, the store of soap being
12 2,8|     sensitive, hyposulfate of soda to fix the prints obtained,
13 2,8|    positive proof, acetate of soda and chloride of gold in
14 3,4|  Harding easily extracted the soda and chlorine. The soda,
15 3,4|    the soda and chlorine. The soda, which it was easy to change
16 3,4|      change into carbonate of soda, and the chlorine, of which