N. H. Darton—New Locality for Hayesine. 459 
like asbestos than any other species, but still in doubt I secured 
all that was possible, and wher arriving in New York made a 
chemical and physical examination of it. A preliminary blow- 
pipe treatment showed it to be readily fusible and when moist- 
ened with acid the characteristic green flame proved it to be a 
ate. The analysis yielded the following results: 
Calculated to CaB,O; + 3H.0. 
Baer yale EME ze 18°39 2 
Horacic FTG. i Eee eed 46°10 46°05 
Se aRenge 35°46 36°53 
one 
SOGAYs ean tac trace 
Magnesia — 
99-95 100-700 
have reason to believe that much more may be proe ea by 
cutting into the vein bios it, and besides there may be many 
reproductions of the same conditions under which it occurred. 
The form was that of acicular crystals about 4™" long and very 
slender. They were grouped together in the form of little 
mats and Goss lay loosely upon the crystals of calcite (dog- 
tooth spar). These geodes were surrounded by others of dath- 
olite and enclosed in a vertical vein 24 to 4 inches wide, se 
filled with the primary forms of calcite and chlorite. The 
is quite soft and apd permeable to infiitoring water, Thus 
de o 
would thus arrest and hold infiltering solutions. I intend to 
investigate how datholite is decomposed and borate of lime 
separated out of its constituents, 
Laboratory, 319 Pearl street. 
