Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. The aim of the author is to introduce the student of Biochemistry into its clinical practicum. This manual is intended to be a reference book for the selection of the right remedy, potency, etc. The arrangement of the book is so self-evident, that no explanations are necessary. It must be mentioned, that the use of this manual cannot be likened to a dictionary, as the individual critic, in the concrete case, must give the decision it is therefore necessary to use more time in going over this manual, than merely to expect an alphabetically arranged repertory.