10 
also shows some of the various tints, such as purplish, 
blueish and greenish, natural to it, though rather palely *. 
Apatite is infusible by the blowpipe. Powdered, and 
thrown on red-hot coals, it emits a yellowish green phos- 
phorescent light. It is soluble in muriatic acid, and the 
solution becomes gelatinous. No decomposition of the 
phosphoric acid from the Lime takes place. This plate 
shows the integrant molecule, a regular triangular prism, 
very distinct in the fractures of the specimen, and also the 
primitive hexangular prism. It has been noticed as found 
in Spain and Germany by most mineralogists:—In the 
former it constitutes large mountains. 
®% We have since received a fine specimen of an opaque white, and water 
blue, from Dr. Turton, about a quarter of an inch in length. 
