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)"