174 NATURAL HISTORY. [NORTH 
stance, science is indebted to Mr. Johnston, of Edinburgh; 
—vanadiate of lead from Beresof, Siberia. 
Boracic acid ( sassoline ) and borates;— borate of soda, 
the salt known by the names of borax and tincal, from 
Tibet, Monte-rotondo, Tuscany, &c.— borate of magnesia 
or boracite in separate crystals, and the same embedded 
in gypsum ;— datolite, being a borate with tri-silicate of 
lime, from Arendahl in Norway; the variety from Sont- 
hofen (supposed to be a distinct species, called humbold- 
tite by Levy) ; and the globular-fibrous variety (which has 
received the name of botryolite') likewise from Arendahl. 
In this Case begins the family of the Carbonates.— Car¬ 
bonate of soda , from various localities, and among which is 
the African trona.— Carbonate of strontia, called stron- 
tianite, in prismatic and acicular crystals, which latter 
have sometimes been mistaken for arragonite.— Carbonate 
of baryta or witherite, among the specimens of which may 
be particularised the beautiful groups of double six-sided 
pyramids, and those of six-sided prismatic crystals.— Ba- 
rytocalcite. 
Case 42. Carbonate of lime . The whole of this 
Case is appropriated to the species called arragonite, 
among the principal specimens of which are the groups of 
prismatic crystals from Kosel, Bohemia, Arragon, &c.; 
those of the coralloid variety of this substance from Eisen- 
ertz in Stiria, formerly called flos ferri, &c. To the 
massive varieties some of the calcareous deposits of Carls¬ 
bad in Bohemia may be referred. 
Cases 43, 44, and 45 contain the crystallized varieties 
of carbonate of lime or calcareous spar . Among the speci¬ 
mens in Case 43 may be specified those illustrative of the 
double refraction, cleavage, supernumerary joints, colour, 
&c.; likewise the various secondary obtuse and acute 
rhombohedrons ; among the former of which the most 
common, but not the least striking, is the inverse variety 
of Haiiy, so called from its being as it were an inversion 
of the primitive rhombohedron of calcareous spar ; and the 
same with a considerable admixture of quartz, commonly 
called crystallized sandstone of Fontainebleau, &c. In the 
next two Cases are deposited many interesting and beautiful 
specimens, from the Hartz, Derbyshire, &c., of prismatic 
and pyramidal modifications of the same substance. 
