164. PROCEEDINGS OF SECTION B. 
Chemical ee 
Moisture at 100° C. ae 840 
Water over 100° C. Sorte eee 
eu SUCH. So% oe cust d- one eee Loe ee eee 
AMIN Son Sour ae eu see eae Dek ES 
Tron Sulphide: 2222.5 so.55. 053s.) on One 
Tron? c3. 02s Liste ne Srna taba es 77-1 I, 
Copper Oxi ee he pick “012 
Chromium Sesquioxide ... ... ... Trace 
Manganese Monoxide ... ... ... Trace 
Nickel Protoxide <..\....:.' 4... - 960 
Cobalt Protoxide ... .......... .... Minute trace 
Hsimne Patenes Meck, en. ae eee ee Trace 
Ma piesa -y.. 5 soc.) arc aes eek rete Pew 
Potach 2) 505 ee oe ee SONG. 
Sdda= iy <: ON Ee AN Trace 
Phosphoric Acid . vey Naericat 095 . 
Carbon, Dioride:.).5,052 shucks as *080 
= OO rintec: ce cas. Seles Oe ee oe - 227 
Oxygen csr ihe is avagarees dene ok ie ee 
100-092 
Specific Gravity (mean of three : 
determinations) ... ... ... ..., 3°466 
“Less Oxygen equivalent to Chiorine 0 :047. 
From ihe above analysis, it will be seen that the nen- 
metallic portion is essentially a silicate of magnesia and iron, 
with iron sulphide. Some of the olivine has undergone 
alteration, and is changed into hvdrous magensium silicate, 
as shown by the material containing 6-19 per. cent, of 
water. : 
THE OXIDATION OF CHARCOAL TO MELITTIC 
ACID. : 
By Professor EASTERFIELD. 
