CONTENTS. 



PAOE 



LECTURES VIII. and IX. 



The Description and Use of the Globes and ^ 

 Armillary sphere 278 > 321 



LECTURES X. and X.I. 



The Principles and Art of Dialing 



LECTURE XII. 



Shewing how to Calculate the mean time of 

 any New or Full Moon, or Eclipse, 

 from the creation of the world to the 

 year of Christ 5800 408 



