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Goulds
Humming Birds; a challenging facsimile project
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Like all Goulds
previous publications the Monograph of the Trochilidae (Hummingbirds)
was issued in parts to subscribers but it was his most ambitious project
and posed several new problems. One of these was that despite all his
endeavours to form a complete collection of hummingbirds Gould was a
late starter in the field and many species eluded him. ............................
For a sight of
these he was forced to borrow from public museums and private collectors
in Europe and South America, and to conduct extensive correspondence
with naturalists in the field having personal knowledge of the birds.
A unique
problem with the illustrations was how to capture accurately on paper
the characteristic iridescent plumage of the male birds (the females
mostly being comparatively dull). Gould had to invent a special
technique using a combination of transparent oil and varnish colours
over silver leaf to overcome this difficulty. With
the release of the Hummingbirds, ( Volume II ) in 1994, Hill House Publishers
had developed a method of being able to give an impression of the plates
being 'metallised' without adopting the rigorous (and now impossible)
methods first used by Gould and his artists. The Hill House method involves
the use of the combination of gloss inks and subtle varnishes to simulate
this effect in the facsimile volumes. Part of the extreme difficulty
in this method lies in the precision needed to apply the inks and varnishes
to the specific small areas where the effect is needed. .............