FOOTNOTES:
[1] This is now out of print.
[2] They have lately been undergoing repair, and will soon be in working order again.
[3] James Fergusson, writing to Mr. Waller on the above subject, says: "It is curious that polygonal forms should be used in this country in the eleventh century, whilst at Caen and on the Continent generally circular forms prevailed well into the twelfth century."