that those lectures were to be experimental or 

 probationary lectures, and I was then informed 

 other lectures might perhaps have been desired 

 that same year, if the first six were favourably 

 received : and I was accordingly asked, whether 

 I should be ready to deliver a second course, 

 if required, immediately after the first. Pre- 

 vious to this, I had twice stated in my papers 

 (on January 8th and 28th) that " unless my 

 plans were adopted with a view of being ren- 

 dered PERMANENTLY useful to the Institution, 

 I could never have any distinct or separate ad- 

 vantage in an undertaking, which was not to be 

 executed without great thought and study, and 

 which would require many drawings, engrav- 

 ings, and models for the necessary demonstra- 

 tions." I had for this purpose twice requested 

 them to compare in their deliberations, the 

 whole nature and bearings of my statements, 

 with the objects they had in view; and had 

 twice represented to them, in writing, the pains 

 and expense which were necessary to do justice 

 to the subject. 



In consequence of the several written state- 

 ments submitted to the managers, and of the in- 

 timations I received, when I made my engage- 

 ment, I proceeded in my undertaking, fully 

 persuaded, that if my plans gave satisfaction, 

 they were to be adopted. 



J spared neither pains nor expense to ensure 



