X PREFACE TO THE SECOND EDITION. 



which it is desirable that he should know, and a little of that 

 which he may learn if his needs or inclinations lead him to go 

 further. It is acknowledged, however, that, in deference to 

 precedent, this purpose has not been carried to its fullest extent. 

 Much time has been spent on the index, in order to make the con- 

 tents quickly accessible. . It is a source of regret to the writer 

 that the additions which the revision seemed to demand have 

 made the present book a little larger than the first edition. 

 BuPFALO, New York, June, 1901. 



