PREFACE  TO THE  THIRD EDITION



The  present  edition  of  the  Theory of  Political

Economy is an  exact reprint of the second edition,

with the exception of the first Appendix containing the

bibliographical list  of  mathematico-economic books.

I desired to add to that list several books which  it

had been my husband's intention to include in the

next  edition,  and when I consulted my friend, Mr.

H.  S. Foxwell, he advised me to continue it up to the

present date.   I  am greatly indebted to the kindness

of those friends  who have enabled me to accomplish

this;  and amongst  others my thanks are especially

due to  the Rev. P. H. Wicksteed, Professor F. Y.

Edgeworth,  and  Professor  Harald Westergaard  of

Copenhagen,  for the  trouble they have taken  in

revising proofs for  me, as well as  in supplying me

with  the  titles  of those books which  ought to be

included.  We have endeavoured to follow the rules

which Mr. Jevons has laid down in the preface to the

second edition, and though  the list is  probably not

complete, I hope  that no work of importance has  been

omitted.