IV DEDICATION. 



written some praiseworthy articles on the expansion of series 

 in the Philosophical Magazine !" How would the manes 

 of Gwdion, Gwyn, and Idris be horrified, were they to hear 

 of such a desecration of the sacred rights of history ! 



You, I am sure, will be pleased to see the labours of some 

 of your predecessors brought to light. They will serve to 

 give additional lustre to the exertions of the best geometrician 

 in England; and the transcriber will feel himself invigorated 

 by the hope of being able to fill up a chasm in history, 

 being convinced that he has left the meritorious labours of 

 later writers Anderson, Fermat, Simson, and Play fair in 

 better and more able hands. 



Believe me, my dear Sir, 

 ever to remain, 



Yours, most faithfully, 



JAMES ORCHARD HALLIWELL. 



JESUS COLLEGE, CAMBRIDGE. 

 March 1st, 1839. 



