Part III section headings added

Page 259. “For example, if 50 ccm of the ether solution of fat give a residue of 8·8 gramme, then 100 ccm represents 1·6 gramme. But this ·6 gramme...” corrected to 0.8 gramme and 1.6 gramme respectively.

Page 309. “with 3·8 litres of withe sugar syrup (american recipe).” withe removed

Page 134 “For this reason the 6, 9 or even 12 roller mills have been more discarded since the last grinding process has been perform granite rollers (cold process).” corrected to performed by

In order to fit within width constraints many of the larger tables have been split and underlining and italic markings have been omitted.

The following spellings have been standardised:

Arctic and Artic, Arctic used.

by-product and bye-product. by-product used.

percent, percent., per cent, per cent., and per-cent. percent used.