SttiicateV 



TO THE MEMORY OF 



JOHN LAW SON, M. E.C.V.S., 



OF MANCHESTER, 



WHO FIRST URGED THE DESIRABILITY OF UNDERTAKINO THIS TASK, 

 AKD WHOSE SINCERE AND INESTIMABLE FRIENDSHIP AND ENCOURAGEMENT FOR 



MANY YEARS 

 THE EDITOR AND TRANSLATOR HEREBY ACKNOWLEDGES WITH SORROWFUL 

 , AFFECTION AND GRATITUDE. 



