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nilRAMlC STUDIO 
No. 12. Modem appHcalion of primitive process. Egg shell porcelain cup by Ade- 
laide Alsop-Robineau. Incised decoration with excised border and central 
medallion. This piece was photographed in the biscuit, before glazing 
and plainly iUustrates the difference between incised and excised decora- 
tion. 
If they are to be glazed, with of course translucent glazes, 
one may obtain very fine decorations by using colored glazes of 
a tone harmonizing with the color of the inlaid design. One 
might, for instance, use for the piece itself a light blue slip, 
inlay a design with dark blue, and cover the whole with a light 
gi'een glaze. This would give a general coloration of extremely 
interesting blue green tones. 
One may also use the metallic iridescence of reducing 
firing. The incised design may be filled with lustrous glazes, 
such as I described in this Magazine four years ago, that is, 
glazes or enamels containing salts of silver, copper and bis- 
muth.* The design in iridescent colors will then appear on 
the background of the unglazed pottery. If one has used a 
porous body, and this is advisable, the intense smoking neces- 
sary for the formation of the iridescence will color the piece 
black, an intense black which, by rubbing, will become a 
beautiful lustrous tone, as I explained before. The copper 
*See Keramic Studio, March, 1908. 
No. 9. Modern applicalion of primitive process. Porcelain vase bv Adelaide Aisop 
Robineau. Inlaid poppy decoration. The design is incised and the 
incision filled with pink and green porcelain slips. Tlie decorative effect 
is quite different from the effect obtained with slip painting under the glaze. 
iridescence will be the best, also the green iridescence pro- 
duced by silver and bismuth. 
To obtain another kind of iridescence over white back- 
gi'ound, one might fill the incisions with ordinary glazes and, 
after firing, cover them with the lustres of the oxidising muffle 
firing. 
In using glazes to fill the incisions, it is important to use 
only glazes which do not flow. 
It might also be interesting to burn the incised piece, 
No. 11. Modern application of primitive processes. Handbuilt black pottery by Edith Field. Excised and modeled decoration. 
