Dear all,
In my library is the following item ex-libris C.M. Yonge:
Dyson, David, The land and fresh water shells of the districts around
Manchester, etc.
pp. xi + 95. Publisher: J. Harrison, Manchester, 1850. 12o.
This is apparently a rather rare item as there is not a copy at either the
Smithsonian or Harvard libraries. My guess is that this is likely to be
the same Dyson of the patronyms of Reeve et al. Unfortunately I recently
moved residence and do not have the work readily available for perusal.
Regards,
Scott Jordan