Arnold James Cooley, Cooley's Cyclopædia of Practical Receipts and Collateral Information in the Arts…
“ These variations in consistency depend upon the relative proportions of solid stearin and liquid olein present in the fat.The vegetable fats are found in various parts of certain plants, but are generally most abundant in the seeds. They are extracted by simple pressure or else by boiling. Two kinds715 of vegetable fat, namely, palm-oil and cocoa-nut oil, are extensively employed in the useful arts.All fats are lighter than water. They are all soluble in ether, benzol, and turpentine, and may be mixed with each other in any proportion. ”
