4G2 Scientific Intelligence, 
bon, and it is decomposed by beat. — Ann. of Phil., New Series , 
v. iv. p. 241. 
MINERALOGY AND GEOLOGY. 
26. Clean eland s Mineralogy and Geology. — We have just re- 
ceived the second edition of this excellent work. It abounds in 
new and valuable information ; and is equally distinguished with 
the former edition, for the accuracy of its descriptions, the full- 
ness of its details, and the judiciousness of its views. 
27. Necker de Saussure's Travels in Scotland.— This amusing 
and instructive book of travels, along with the “ Essai Geo- 
logique sur rEcosse r> of Boue, noticed by us in an early number 
of this Journal, ought to be in the hands of every foreigner who 
wishes to travel with advantage in our country. M. de Saus- 
sure’s work contains not only numerous interesting and important 
details and reasonings, in regard to the geognosy of Scotland, but 
also much accurate information concerning the habits and man- 
ners of the people ; the various useful establishments, particularly 
those which are characteristic of the country ; and the whole is 
enlivened with historical details, and general popular observations 
and remarks. 
28. Forma tion of Calcareous Spar.- — Mr Haig, on pouring out 
the contents of a bottle of Saratoga water, which had stood seve- 
ral years in a cellar, found the bottom to contain well-defined 
crystals of calcareous spar, which, on being split, exhibited the 
usual cleavage of that substance. 
29- Neptunian Formation of Chdlcedony. — On opening a drusy 
cavity in Carrara marble, whose walls were lined with rock crystals, 
it was found to contain a pound and a half of a perfectly trans- 
parent and slightly sapid liquid. In the same cavity, a transpa- 
rent mass,, like rock-crystal, was observed, but which was so soft 
that it received the impression of the finger. On exposure, it be- 
came harder, and at length assumed the character of Chalcedony. 
30. Toad in a solid Rock . — The workmen~engaged in blasting 
rock from the bed of the Evie Canal, at Lockport, in Niagara 
County, lately discovered, in a small cavity in the rock, a toad 
in the torpid state, which, on exposure to the air, instantly re- 
vived, but died in a few minutes afterwards. The cavity was 
only large enough to contain the body, without allowing room 
