vi * CEMENT. 



ago. The experiments are commencing, and the writer 

 is glad that he has heen one instrument in exciting 

 their pursuit. The whole subject is, just now, of very 

 increasing interest. The industrious student and the 

 unprejudiced discoverer may yet gather not only facts, 

 but fame. 



Three of these Essays first appeared in " Bell's Weekly 

 Messenger," whence they were immediately transferred 

 to the "Morning Herald," and perhaps to other prints; 

 the rest is offered to the reader's consideration for the 

 first time. The necessity of being brief will excuse the 

 author for here acknowledging, in general terms only, 

 the kind assistance which has been afforded him by very 

 many friends and correspondents. 



CKINGLEFORD HALL, NORWICH, 

 April, 1851. 



