Vol. I, No. 6.] Note on Bundelkhand Geiss. 171 
ENE S« | 
When two thermo-couple temperatures are given for the same 
time, they refer to different points in the mufile. 
Mufile turned ont at 2-20 p.m. Pieces drawn at 53 P.M. 
Pyramid with 5°/, CaCO;—This was a dark, coloured, hard, 
dense mass, glazed on the surface though not so much as the 
pyramid made from the clay alone, and somewhat lighter in 
colour. No change of shape could be detected, and there were no 
signs of fusion. The fracture was glassy in parts, the rest being 
dull and stony, and was blue to brownish-black. 
Pyramid with 10°/, CaCO;.—This was much lighter in colour 
than the two previous pieces, was light brown, dull, not glazed, 
Was not so hard or dense as the Pyramid with 5°/, CaCO,. The 
piece was easily broken, giving a dull, sandy fracture, and show- 
ing the interior to be fairly compact. ‘The colour of the fracture 
was a brownish pink. The pyramid had not sunk at all, and 
showed no signs of fusion. 
The best results as regards the making of earthenware ap- 
pear to be given by employing the clay alone, without any ad- 
mixture of lime. ‘The addition of lime in small proportions re- 
duces the melting point. The hardness and density of the ware 
depend on the temperature to which it has been heated. If that 
temperature has been too high, the upper parts of the pieces are 
porous and cindery, this probably being due to the liquation of a 
fusible silicate. The colour of the ware is necessarily dark, 
owing to the high percentage of oxide of iron in the clay. 
It does not appear to be possible to obtain good earthenware 
from the clay. Hxperiment III gave the best pieces. 
The clay is evidently not Fuller’s earth. 
When mixed with water, with, or without additional lime, a 
highly plastic clay is obtained.” 
In addition to the experiments recorded in the above report, 
the clay was fired in an ordinary earthenware kiln, but it refused 
to bind and simply dried to a porous friable mass differing very 
little from the product obtained by merely moistening it and let- 
ting it dry at an ordinary temperature. Heated in an electric 
furnace to a temperature of about 2900°C the clay melted to fluid 
which could be easily poured or cast. 
From the foregoing it will be seen that the clay is little like- 
ly to be of any use except that to which the villagers have put it 
from time immemorial, 7.e., for whitewashing their houses. 
