F. H. Storer—Ammonia a contaminant of Sulphuric Acid. 448 
100 grams (or c. c.) of the 
per contained 
m of NH. 
Nitrate of potash, pure crystals from Marquart, 20 grams 
gave 0°000015 gram of ammonia,.-....---.....-.--- 0°000075 
Nitrate of soda, taken from a bag of the crude nitrate 
0:000022 gram of ammonia. Compare Vogel’s detec- 
tion of . of ammonium in rock salt (Gmelin’s 
sintid-book, 11416); sc 5202 Se sk A be 22 0°00011 
Ditto, pure bene ee 20 grams gave 0°0000425 
grain of ammoniay:. =. ois caress ee et ad 0°000213 
Ditto, a sample prepared re dissolving ae crystals ~ 
carbonate of soda in pure chlorhydric gave 
reaction when tested pear with N saa 8 acees - none. 
Pho eepnais of soda, pure crystals from Marquart, 20 
grams gave no reaction for ammonia, _.-..---.------ 0°00000 
Acetate of soda, pr crystals, 20 grams gave no reac- 
ou tor AingiGnis, ¢. 03. a ge 0°00000 
Carbonate of soda, pure crystals from Marquart, gave no 
reaction for ammonia when tested directly with 
essler’s reagent, _ putes oy be OD0000 
Carbonate of potash, pure from Marquart, gave no reac- 
“on when tested -directly,: ... - scavcaic. -ceeds cen 0°00000 
Hydrate of soda, pure fron wae 5 grams gave no 
reaction for a mmonia, . ie ee er er a re 0700000 
quicklime from "Brandon, Vt., 20 gram s of the whitest 
portion of pear ave sic reaction for ammonia, 
while 20 hAbscark oe the grayest merece gave 0°00001 
of a --- 0°00005 
lia “ potash ‘from “Marquart: gave 0-0001 gram of 
i i 
0°00050 
grams gave 0-00015 gram of SYAMONIAG 4 coc ee ed 0°00150 
FR lowers of sulphur from Ma xeuart, 10 grams gave 
"00075 gram of ammonia, -.--------. 000750 
Sulphide “of sod oe from Marquart, 5 grams gave 0°001 
gram we -- 0°02000 
Sulphide “¥ ‘potasiam from "Marquart, 5 grams gave 
wie weliiumen tedas bee vide eolk. 0°01800 
Supe of i iron from Marquart, 5 grams gave 0°0008 ae 
Ditto, | from a “quantity of the foregoing that had just 
been a Hessian crucible, 20 grams taken 
= middle of as solid ke, gave 0°00025 gram of 
mmonia, - 0°00125 
