Transcriber's Note: The following corrections which did not concern obvious printer's errors have been made to the text.

• In the Table of Content, the formatting of the entry for "Dialysis" was changed in order to indicate that this part is a section of the chapter "Methods of Destruction of the Organic Substances"
• "treated with "mélaïnocome" was "treated with "melaniocome"
• "M. Salleron offers for sale a small apparatus (Fig. 20)" wrongly referred to Fig. 16.
• "If the crystals originate from fresh blood, they appear as represented in Fig. 21; crystals from old blood are represented in Fig. 22." wrongly referred to Fig. 17 and 18; same in "The fluid is examined from time to time under the microscope: when it is sufficiently concentrated, crystals, presenting the appearance represented in Figs. 21 or 22, will be observed."
• "an oxidizing body" was "an oxydizing body"
• "condenser" was "condensor"
• "areometer (alcoholmeter)" was "areometer (alcoolmeter)"