LECTURE XI.] HISTORY OF CHEMISTRY. 2IQ 



formed, and this remains united with the hydrochloric acid 

 which is produced simultaneously. 68 



The general arrangement and the comprehensive character 

 of Gerhardt's system leave nothing to be desired. Even 

 although our views have been considerably changed and cleared 

 up since that time, and although we are compelled, from our 

 present standpoint, to look upon the types as insufficient, still 

 Gerhardt's services to chemistry can never be questioned. Un- 

 fortunately he was not long able to congratulate himself on the 

 acceptance that his admirable Hand-book met with, as he died 

 shortly after its completion. 



68 Compare p. 149. 



