202  Lead  Number  of  Asafetida.  {Am-£y'\^rm' 
after  drying  0.0863  gnu.  and  0.0866  gm.  PbS04;  after  ignition 
0.0809  and  0.0835  (  ?)  gm- 
Duplicates  on  blank,  assay  3,  after  drying  0.21 12  and  0.21 11  gm. 
PbS04;  after  ignition  0.2066  and  0.2071  gm. 
Assay 
Resin  in 
aliquot 
Blank 
PbS04 
Dried  uo° 
Ignit. 
Lead  No. 
PbS04 
Dried  uo° 
Lead  No. 
Lead  No. 
PbS04 
Ignit. 
Lead  No. 
I  a 
O.2685 
O.1842 
O.1782 
O.IOOO 
214.2 
O.0960 
209.I 
1  b 
O.2685 
O.1842 
O.1782 
O.IOO4 
213. 1 
O.O952 
211. 1 
2  a 
0.2520 
O.1658 
O.I60I 
O.0864 
215.4 
O.0809 
214.6 
3  a 
O.2893 
0.2III 
0.2068 
O.II78 
220.2 
0.1 146 
217.7 
3  b 
O.2893 
0.2III 
O.2068 
O.II88 
217.9 
O.II5I 
216.5 
4  a 
O.2408 
0.2III 
O.2068 
O.I229 
250.1 
0.1 194 
247.9 
4  b 
O.2408 
0.2III 
0.2068 
O.I239 
247-3 
O.I200 
246.2 
No.  13. — Asafetida  and  ammoniac  tears.  The  purified  resins 
of  each  were  prepared  separately  and  dissolved  in  alcohol  to  make 
solutions  containing  approximately  1. 1  gm.  in  each  25  cc.  The 
solutions  were  measured  into  tared  beakers  from  burettes ;  the 
alcohol  evaporated  upon  the  water  bath  and  the  resin  dried  in 
the  usual  manner. 
Assays,  11  to  15  Inclusive,  were  made  using  a  5  per  cent.  Lead  Acetate 
Solution. 
>» 
rt 
01 
tn 
< 
Resin  Asa- 
fetida Soln. 
Cc. 
Resin  Ammo- 
niac Soln. 
Cc. 
Resin  in 
aliquot 
Blank 
PbS04  in 
aliquot 
dried 
1100  C 
Ignit. 
Resin  solu- 
tion Pb- 
SO4  in  ali- 
quot dried 
1100  C. 
Ignit. 
Lead 
dried 
iio°C. 
Number 
ignit. 
I 
25 
O.2387 
O.I99I 
O.I961 
O.II9I 
0.1 164 
228.9 
228.0 
2 
25 
O.2323 
O.I99I 
O.I961 
0.III8 
O.IO92 
256.7 
255-5 
3 
20 
O.I916 
O.I99I 
O.I961 
O.1283 
O.I26I 
252.8 
249-5 
4 
25 
O.2323 
O.199I 
O.I961 
O.I748 
O.17H 
71.4 
73-5 
5 
25 
O.23OO 
O.I99I 
O.I961 
O.171O 
O.1699 
834 
77.8 
6 
22 
3 
O.2347 
O.I99I 
O.I961 
O.I2I7 
O.II93 
225-3 
223.5 
7 
20 
5 
O.2329 
O.I99I 
O.I961 
O.I234 
0.I2I2 
222.0 
219.6 
8 
20 
5 
O.2349 
O.199I 
O.I961 
0.1228 
0.1208 
221.9 
218.9 
9 
18 
6 
O.2275 
O.1991 
O.I961 
O.I292 
O.I27I 
209.9 
207.2 
10 
15 
10 
O.2362 
O.1991 
O.I961 
O.I34O 
0.1322 
188.2 
184.7 
25 
0.2355 
O.250O 
O.2476 
O.I532 
0.1520 
280.7 
277-3 
12 
25 
O.2376 
O.2500 
O.2476 
O.I550 
0.1530 
273.1 
271.9 
13 
25 
O.232O 
O.2500 
O.2476 
O.2175 
0.2I22 
95-6 
104.2 
14 
20 
5 
O.234I 
O.2500 
O.2476 
O.1655 
O.163I 
246.5 
246.5 
15 
15 
10 
O.2352 
O.2500 
O.2476 
O.1738 
O.I723 
221.3 
218.7 
No.  14. — Solution  of  asafetida  resin  from  No.  13.  Comparison 
of  a  4  per  cent,  lead  acetate  solution  with  a  5  per  cent,  solution  and 
