rton._--In Brewster's _Life of Sir Isaac Newton_, p.
250., is the following passage:

"This accomplished nobleman was created Earl of Halifax in 1700, and
after the death of his first wife he conceived a strong attachment for
Mrs. Catherine Barton, the widow of Colonel Barton, and the niece of
Newton."

I wish particularly to know the _maiden_ name of this Catherine Barton; she
married Mr. Conduitt, who succeeded Sir I. Newton as Master of the Mint.

J. E. R. S.

Sampford, Braintree, April 7. 1851.

_Sempecta at Croyland._--DR. MAITLAND has so kindly answered your
correspondent's Query respecting his work on Mesmerism, that I venture to
ask him another, through the medium of your pages. Where can be found the
poem respecting the old soldier monk at Croyland (or Sempecta, as Ingulphus
calls him), from which DR. M. has given extracts in p. 305. of his _Dark
Ages_?

H. R. L.

Trin. Coll.

_Schmidt's Antiquitates Neomagensis--Roman Medicine-stamps._--Can any of
your readers inform me,--

1st. Of the DATE when Schmidt published his _Antiquitates Neomagensis_, and
WHERE: also in what libraries it is to be found?

2nd. Of the existence of any Roman medicine-stamps found in the British
Islands, as yet undescribed by those who have written on the subject.

Q.

_Sir Harris Nicolas' History of the Royal Navy._--Is there any probability
that the _History of the Royal Navy_, begun by Sir N. H. Nicolas, and
carried by him to the reign of Henry V., will ever be continued. It is a
most valuable work, and was stopped by his lamented death, just as it was
beginning to be most interesting.

E. N. W.

_Wooden Baldrocks._--_Thanksgiving-book._--In the vestry-books of St.
Peter's, Ruthin, co. Denbigh, there are some entries, explanations of which
will be very acceptable.

From 1683, and many subsequent years, there is a constant repetition in the
churchwarden's account of "Wooden Baldrocks," from time to time supplied
new to the parish.

In 1704, "A Thanksgiving-book" is charged in the parish accounts.

Query the use and nature of Baldrock? and what book is meant by a
Thanksgiving-book?

About the above period, continual payments are made for the destruction of
hedgehogs, which seem to be valued at sixpence a-piece, in some cases
fourpence; and to have been allowed in the parish accounts.

A CHURCHWARDEN.

_History of the Jesuits._--Who was the author of _A History of the Jesuits;
to which is prefi