Scientific Intelligence. --Mineralogy. 179 
Acid ; the other is beautifully crystallised in prisms, of a 
greyish-white colour, and in many specimens impressing calca- 
reous spar, and, when analysed, has been found to contain 
in 100 parts, 1 of Water, 33 of Carbonic Acid, 6 of Lime, 
and 60 of Strontian.— Of the sulphate, three varieties have 
been noticed upon the banks of the Nidd, near Knaresbo- 
rough. The foliated sulphai of Professor Jameson finely crys- 
tallised, of a delicate blue colour, and well meriting the name of 
Celestine, in magnesian limestone, resting upon the new red 
sandstone, and containing a small percentage of carbonate of 
lime, varying in different specimens. The compact sulphate, 
of a snowy white, occurs with the former in spheroidal or reni^ 
form pieces, containing 7 per cent, of carbonate of lime. — The 
radiated sulphat, of a yellowish or reddish- white colour, is found 
at Bilton, upon the opposite bank of the river, in the new red 
sandstone formation, accompanied by several varieties of gyp- 
sum. This sandstone greatly varies within very narrow limits, 
extremely compact and hard where inclosing the strontites, and 
then becoming almost amygdaloidal, with nodules of quartz, 
on one hand ; and on the other passing into a soft red marl, con- 
taining gypsum. 
11. Mr Heuland^s Mineralogical Collection. — The most ex- 
tensive, splendid, and useful collection of minerals in the world, 
is that belonging to Mr Heuland of London. Those parts 
of this cabinet which have been occasionally shewn to mineralo- 
gists, have not failed to excite their wonder and admiration, as 
well as an ardent desire to see the whole of this splendid display 
of the riches and magnificence of the mineral kingdom. It is 
therefore with great pleasure we inform the mineralogical world, 
that such arrangements are now making by Mr Heuland, as will 
enable him to display the whole collection some time during the 
course of next spring. 
IS. Mineralogical Collections.-— M jc lA.e\x\8L\\d, from the vast 
collection of the finest and most characteristic minerals in his 
possession, and from having lately added to his stores the splen- 
did cabinet of M. de Dree, and the well known and admirable 
cabinet of a foreign nobleman, will be enabled to supply public 
institutions, or private collections, in a style hitherto unknown in 
M 2 
