12 
was very desirable that when any more specimens are met 
with they should be preserved in the public parks, or some 
other suitable places for the inspection of the public. Lan- 
cashire and Cheshire contain many large boulders, and it is 
to be wished that they should not be buried near to where 
they are found, so as to get rid of them. In his remarks on 
the building stones of Manchester in 1856, Yol. I., p. 194 of 
the Proceedings of the Society, he stated : “ By the facilities 
which railways now afford one might have expected that 
some of the beautiful syenite of Shap, containing large 
crystals of felspar or the grey syenite of Bootle and Kaven- 
glass would have made their appearance in Manchester, but 
to nry knowledge none of them have been used. It is 
possible they may not have been known to our architects/' 
He was glad to say that the former stone had been intro- 
duced into the buildings of our city, and, when polished, 
had a beautiful appearance. It was a granite of very 
marked character, and could not easily be mistaken. After 
a search of forty years he had never found a specimen of it 
in the drift near Manchester, and when he heard from the 
newspapers that a block had been discovered at Collyhurst, 
and placed in Queen's Park, he went to look at it, but that 
stone was certainly not Shap granite, a rock which he had 
several times carefully examined in the quarry at Wastedale 
Head. It was a grey granite, and it was difficult to speak 
with certainty whether it came from Bavenglass, Dalbeattie, 
or the Isle of Man, as specimens from those places are much 
alike, and it would require to be carefully analyzed by a 
chemist before it could be identified. 
ff Qn the formation of Azurite from Malachite," by 
Charles A. BcjrgJeardt, Ph.D. 
Two years ago I placed a specimen of rather poor Mala- 
chite (from Alderley Edge) on a rockery in my garden 
where it would be exposed to the action of the weather, in, 
