NOVEMBER, 1907.] - THE ORCHID REVIEW. 
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EPIDENDRUM WALLISII. 
It is pretty generally known that photography does not always give a correct 
idea of the colour of a flower, in spite of its superior accuracy with respect 
to drawing, but it is not always realized how great an improvement has 
been effected by the introduction of isochromatic plates and the yellow 
Fig. 36. EPIDENDRUM WALLISII. 
graphs of Epidendrum W 
hoot, and were taken at 
ith a yellow screen, the 
allisii may prove 
screen, hence the annexed photo é 
interesting. They represent the same flowering Ss 
hos ee ae BREE cee llisit, as is well known, 
lowe ‘ - creen. E. ailisul, aS 1S ‘ . 
er On an ordinary plate without as : es 
; ee tted with dark purple, and a 
has yellow sepals and petals, more or less Spo 
