220 JAMES SHANKS 



to have been thought very much of by Mr. 

 Gundelach, for they were not followed up or 

 developed by him ; and Professor Buffs own 

 colleagues, Drs. Henry Will and Hermann 

 Kopp, the Professors of Chemistry at Giessen, 

 have no knowledge of Dr. Buff having con- 

 sidered himself as the originator of the 

 perfected method of lixiviation. Dr. Buff is 

 no longer with us ; we cannot refer the 

 disputed point to him for further elucidation ; 

 and we do not feel justified in reversing the 

 verdict of the best instructed and most ex- 

 perienced contemporaries, and shall most 

 certainly attribute to Shanks the honour of 

 being one, at least, who was mainly instru- 

 mental in introducing the present perfect 

 arrangement and method of lixiviation, and 

 shall continue to apply to them the term 

 " Shanks' Vats," and not, as Lunge suggests, 

 " BufT-Dunlop Vats." 



" Shanks' Vats " have proved successful in 

 accomplishing all that was sought in perfect 

 lixiviation : 



i st. Rapidity of Solution, 

 2nd. Little water employed, 

 3rd. Low temperature, 



and they have secured : Good production ; 



