Excerpt from Thermochemistry
The experimental work, consisting of the numerical and theoretical results recorded in the following pages,was carried out in the years 1851 to 1855; the greater part of it, however, belongs to the last twenty years of that period, namely, to the time during which I held the position of Director of the Chemical Laboratory of the University. The object of the research was to undertake in as systematic and complete a manner as possible the investigation of the heat-phenomena of the more important chemical reactions, and by the interpretation of these results to gain some further knowledge as to the real nature of chemical processes.
The research as a whole, together with all the experimental details, was published during the years 1882 to 1886, in a four-volume work entitled, Thermochemische Untersuchungen. This work is somewhat unique, inasmuch as the author in his endeavour to solve the problems under consideration has relied exclusively upon the results of his own original, numerical determinations, which number many thousands.
The importance of these results has been in no way lessened by the passage of years, but the manner in which they have been represented and applied has often proved misleading, and more especially their authorship has frequently remained unacknowledged.
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