Professor Hülsmann associates Jevons and Walras line of economic thought with the Gossen School of economics. In this he is entirely right.
http://books.google.com/books?id=iy2-F493uXwC&pg=PA135&lpg=PA135&dq=interpersonal+utility+jevons&source=bl&ots=bk5GeWz9K8&sig=gfwRvWAQzxvAK_xs1Qftk2hGMmY&hl=en&sa=X&ei=rK-nUJ_OM4-q0AWBjYFI&ved=0CDcQ6AEwAQ
http://books.google.com/books?id=4nd6alor2goC&pg=PA311&lpg=PA311&dq=interpersonal+utility+jevons&source=bl&ots=mH7VJQZN3s&sig=74tiYkTegJtAbzYhHTC-YbuNhKA&hl=en&sa=X&ei=rK-nUJ_OM4-q0AWBjYFI&ved=0CDUQ6AEwAA
Jevons also denied the possibility of making interpersonal comparisons of utility, pointing out that price theory did not require such comparisons
As I understand the issue, Jevons denied direct interpersonal comparison of utility, but accepted indirect comparison via money.