T H E J O U R N A L OF I N D U S T R I A L A N D ENGINEERING CHEMISTRY
Aug., 191 j
787
for floating t h e hydrometer, a small Fahrenheit thermometer, j o o cc. of hydrochloric acid (sp. gr. I . I j ) , a j o cc. graduate, a small dropping pipette a n d a scoop for convenience in transferring t h e sample. T h e manufacturer's price for a single outfit, i t seems now, will be less t h a n $10.00.
APPLICATION O F T H E METHOD
carbon apparatus. CALCILM CARBONATE EQUIIALEYTS Limestone Author's Standard
200 201 220 22 1 223 224 226 230 240 244 254 256 257 Calcite
U
80.0 81.5 i8.5
80.0 81.8 i8.6
71.0
71.1
,8.5 83.0 82.5 83.5 99.5 98.5 97.5 89.0 95.5 99.5
78.7 84.0 82.9 83.2 99.0 98.5 9i.i 88.9 95.8
..
For analyzing carbonates other t h a n limestone a n d similar materials, this instrument is fitted with a graduated stem which reads percentage of carbon dioxide, an arrangement which greatly extends its use. I t will be found especially suited t o determining t h e comparative strengths of baking powders and considering speed and accuracy is more suitable t h a n a n y other device novi employed for t h a t purpose. The method is adapted for use in all chemical laboratories, college, experiment station, or commercial laboratories. However, it is devised for use outside of chemical laboratories, also. Limestone companies can employ it t o check u p on every carload of their goods, or t o locate t h e stone in their quarry most suitable for grinding. County agricultural agents will use it t o keep posted on t h e quality of limestone being sold in their territory a n d t o determine t h e composition of local limestone deposits. Many a n individual farmer or some member of his household will no doubt wish t o own t h e apparatus. L*EWYORKAGRICULTURAL EXPERIMENT STATION GENEVA,NEW Y O R K
CARBONATION STUDIES: I-A MECHANICAL STIRRER FOR CARBONATION DIRECT IN THE BOTTLE By
SOME DETAILS
$ 1 Q
