C V ] 
laily to the Rev. J. T. Becher of Southwell^ 
at whose suggestion this work was underta¬ 
ken ; and to whom I stand indebted for the 
form which this publication now assumes, 
as well as for that unreserved assistance, 
which has effected the solution of every dif¬ 
ficulty that occurred in the progress of this ' 
undertaking. 
