No. 216.] 233 



physiology for the hfialth and happiness of the animal life. And in 

 the engineers department, under skilful management, lifeless substan- 

 ces are made to assume the properties and powers of vitality. Guided 

 by the science of chemistry and mechanics, a prodigious power is 

 evolved, which is only dangerous and destructive when operated by 

 an unskilful engineer; for, in the care and keeping of a practical^ 

 scientific mechanic, it is made an unspeakable blessing to the human 

 family. Its nature partakes of the properties of the elements on 

 which it feads. Its natural life is not for a season only, but for all 

 time to come Its vitality will endure until the last trumpet shall 

 sound, and its death take place only when the elements shall melt 

 with fervent heat, and time shall be no more. Such a machine cer- 

 tainly deserves the protection of the land, and the engineer an hon- 

 orable badge, is the opinion of, dear sir, 



Yours, with esteem, 



JOHN CLOWES, 



Member of the Am. Inst. 



