Nautilus.

Pontefract on the Thames.—Permit me to ask, through the medium of your useful publication, where Pontefract on the Thames was situate in

the fourteenth century? Several documents of Edw. II. are dated from Shene (Richmond); in 1318, one from Mortelak; in 1322, one from Istelworth; and several are dated Pountfrcyt, or Pontem fractum super Thamis. (See Rymer's Fœdera). It is very clear that this Pountfrcyt on the Thames must have been at no great distance from Shene, Mortlake, and Isleworth, also upon the Thames; and this is further corroborated by the dates following, from the places alluded to, so closely.

N.

June 14. 1850.


Replies.

ON THE ORIGIN AND PROGRESS OF THE STUDY OF GEOMETRY IN LANCASHIRE.

The extensive study of geometry in Lancashire and the northern counties generally is a fact which has forced itself upon the attention of several observers; but none of these have attempted to assign any reasons for so singular an occurrence. Indeed, the origin and progress of the study of any particular branch of science, notwithstanding their attractive features, have but rarely engaged the attention of those best qualified for the undertaking. Fully satisfied with pursuing their ordinary courses of investigation, they have scarcely ever stopped to inquire who first started the subject of their contemplations; nor have they evinced much more assiduity to ascertain the how, the when, or in what favoured locality he had his existence: and hence the innumerable misappropriations of particular discoveries, the unconscious traversing of already exhausted fields of research, and many of the bickerings which have taken place amongst the rival claimants for the honour of priority.