118 
carbonate, and that there is little or no chemical action between 
the lime and sand, and also to shew that in situations exposed 
to moisture, such as near the ground, where it is well known 
that mortar usually sets very hard, the lime in the interior of a 
thick wall may be almost entirely converted into carbonate. 
The old church of Little Ellingham was this year pulled 
down in consequence of a fire which destroyed the roof and 
otherwise damaged the building, and the mortar analysed was 
taken from the south wall while in process of demolition, at a 
spot about a foot above ground and about the same distance 
from either face of the wall, which was about two feet thick. 
This mortar was quite unaffected by the fire. The walls were 
of flint, and Mr Healey of Bradford, the architect of the new 
church, considers them to have been built about the year 1400 
A.D. An inferior limit to the age of the building is fixed by 
extant records relating to the insertion of a particular window in 
1469, which window remained until the fire this year, so that 
the mortar may be assumed to have been 400 years old at the 
least. The following are the results of the analysis :— 
CaCO’, &c. soluble in HCl...... 27°49 
Sharp siliceous sand .........-.. 7251 
100:00 
The part soluble in HCl gave in 100 parts 
COP eae ener a9 21 
SiO coeeeterne: 3 
SO reer ae Mace 1°53 
COOP ira cccomcune 52°64 
IMO) Ske scree onion 95 
INCE Cl Tei saensenunecr 05 
Hes eAeO eee. 82 
Ja (9 betayates emanate 510 
