He was at the forefront of process engraving technology; the first in South Australia to do colored monotypes.
2.
Weldon began his career at " Brisbane's Truth " newspaper as a half-tone colour etcher in the process engraving department.
3.
There existed in the minds of many publishers a strong prejudice against process engraving because several processes had been introduced, of which they had made trial with very unsatisfactory results.
4.
There is a presumption against novation, so that " where there is doubt the court prefers not to imply a novation . " An important case in this regard is " Electric Process Engraving and Stereo Co v Irwin ":
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