Complex sentence: Summoned to Ottawa in January 1905, Mulock ordered Walsh to produce an estimate by 11 January, which he did over protests of a lack of measurements, and put the figure at $328,825.
Split into simpler sentences: Summoned to Ottawa in January 1905, Mulock ordered Walsh to produce an estimate by 11 January. Continuing to protest over a lack of measurements, he put the figure at $328,825.