Chemicai Society. 319 
Uric Aid. 
1. 2. ar: Ax, 
PIBEANCE pan «0:5 6-40» b/01 98 S19 08 4:99 5°14 5°21 5°45 
Platinum salt, with filter...... 29°14 30°2 80°53 =. 33162 
SM (tS id sis tinal has 3 eaeuls 3°29 3°28 3°12 
26-01 “26°91 927-25 “98-5” 
_ 55 ee 1°6506 1°7077  1°729 = 1:808 
og ea ela 33°08 33°22 33°19 33°19 
Theoretical per-centage.......... 33°36 
Urea, with a little sugar. 
RAINE Bate 5 4.) 5,0) Sh 4) chs ss ovale hein ates 4:17 
Platinum salt, with filter ............ 34° 
REMY Foxe SS AM ec disdl ofa ta a?a au sle ates 3°35 30°65 
Pine a Ete PON OP 1°945 
Pervenne cried 0. ee! sateere eae 46°64 
Theoretical quantity...... 46°78 
Hippuric pie 
2. 
PIUDMATICE 4 seen oes 5.0 8° “a6 8°24 
Platinum salt and filter .. 14°17 13°43 
Wilber coon ios 0s bile He 3°44—10°73 3°23—10°2 
PUMPER see (si ais fed Said isis “6809 *64729 
Pew Remb ss siy Dials. oid Bh 77 7°85 
By theory?! 77 Ste 302 7°82 
Allantoin, with a little sugar. 
he : 
BOOB PAIICE ics toa s.< 5 nce « 8°23 5°47 
PAM: BALE 5 sia < «2 anny? 45°61 30°47 
Per-centage of nitrogen .. 35°17 35°35 
Theoretical quantity......  35°5 
November 15.—The following communications were read :— 
54. “ On some Astringent Substances as Sources of Pyrogallic 
Acid,” by John Stenhouse, Ph.D. 
55. “ On some new ie of Galvanic Action, and on the Con- 
struction of a Battery without the use of oxidizable Metals,” by Alex- 
ander R. Arrott, Esq. (Both these papers will shortly appear in the 
Philosophical Magazine. ) 
December 6.—Numerous specimens of rare chemical products 
were exhibited by Mr. Loyd Bullock. 
The President (Prof. Graham) exhibited a stereotyped plate which 
had undergone a secondary crystallization by exposure to a damp 
atmosphere in contact with paper. 
The following communications were read :-— 
56. Extract from a letter from Dr. Will, dated Giessen, November 
10, 1842. 
“I have repeated Reiset’s experiments on the combustion of sub- 
* Mixed with 4 grains of sugar. 
