124 : [Aveust, 
The chlorides were weighed together, dissolved in water, and on the addition 
of bichloride of platinum evaporated to dryness, and the remaining double salt 
of bichloride of platinum and potassium extracted by alcohol. This salt was 
heated to redness (as its quantity was very smal],) and the platinum separated 
by water from the chloride of potassium. From the quantity of platinum, that 
of potash and chloride of potassium was calculated, and the latter subtracted 
from the whole amount of alkali-metals. The difference is the weight of 
chloride of sodium and lithium, but their quantity is too smalJl for a correct 
analysis. From reactions it was supposed that the mineral contained about 
equal proportions of those, Fluorine and phosphoric or boracie acid could not 
be detected. 
ELECTION. 
Mr. James L. Claghorn, of Philadelphia, Mr. George M. Keim, of 
Reading, Pennsylvania, and Dr. G. Bischoff, of the same place, were 
elected Members ; and ) 
Dr. Henry G. Dalton, of Demerara, was elected a Correspondent. 
August dd. 
Vice-President BripGEs in the chair. 
A communication from Prof. 8S. F. Baird was read, stating that the 
Vulpes Utah, of Audubon and Bachman, described in the last No. of the 
Proceedings (for May and June) is identical with the V. macrourus, 
Baird, described in Capt. Stansbury’s Report of the Exploration of Utah. 
As this Report was published early in June, the writer claims priority 
of date for the latter name. 
Dr. LeConte read a paper intended for publication in the Proceedings, 
entitled ‘Remarks on the Coccinellidx of the United States,’ which 
was referred to Dr. Watson, Dr. Hallowell and Mr. Kilvington. 
Dr. LeConte read a second communication, also intended for publi- 
cation, entitled ‘“‘ Description of a new species of Trombidium.” Referred 
to the same Committee. 
| August 10th. 
Vice-President Bripcexs in the Chair. 
A letter was read from Dr. J. P. Heister, for Dr. Bischoff of Read- 
ing, Pennsylvania, dated August 5th, 1852, acknowledging the receipt 
of the notice of election of the latter as a member of the Academy. 
A circular was received from Mr. Francis S. Holmes, Curator of the 
Museum of Natural History in the College of Charleston, dated July 
1852, giving an account of the establishment of the Museum, and re- 
questing the transmission of duplicate specimens in exchange, and the 
publications of the Academy ; and also offering to present a specimen of 
a recent Crinoid from the coast of South Carolina. | : 
The communication was referred, on motion, to the Curators. 
A letter was read from the Secretary of the Linnean Society of Lon- 
don, dated June 23d, 1852, acknowledging the receipt of the last No. 
