_Fox of Whittlebury Forest._--In Mr. Jessie's _Life of Beau Brummel_, I met with a passage which spoke about the "well-known fox of Whittlebury Forest." Can any of your readers kindly inform me in what the celebrity of this animal consists, that Mr. Jessie takes for granted is so well known? A FOX HUNTER. _Names and Numbers of British Regiments_ (Vol. iv., p. 368.; Vol. vi, p. 37.).--I feel disappointed that none of your numerous and well-informed readers have responded to my inquiries on this subject. Hoping, however, that answers may still be obtained, I venture to repeat the questions for the _third_ time, viz.: 1. What was the origin of giving British regiments the _name_ of a certain officer, instead of _numbering_ them as at present? 2. If in honour of an officer commanding the corps, was the name changed when that officer died or removed to another regiment; or what was the rule? 3. _When_ did the present mode of _numbering_ regiments begin; and by whom was it introduced? 4. What was the rule or principle laid down in giving any regiment a certain _number_? Was it according to the length of time it had been embodied? 5. What is the guide now, in identifying a _named_ with a _numbered_ regiment? For example, at the battle of Culloden, in 1746, "Wolfe's," "Barrell's," and "Howard's Foot" were engaged. Now, what is the rule for ascertaining the _numbers_ of these, and other old regiments, in the British army at the present day? I shall feel greatly obliged by the above information. Z. Glasgow. _Daughters of St. Mark._--How many were adopted as daughters of the Republic of St. Mark? Catherine Cornaro was one, and, I believe, Bianca Capello another. I think there were but one or two more: but who were they? ROSA. _Kentish Fire._--What is the origin of the term "Kentish fire," signifying energetic applause? ROSA. _Optical Phenomenon._--On the afternoon of the 20th January, at one o'clock, as I stood on the beach of Llandudno Bay, North Wales, I observed a rainbow, from the circumference of which passed a number of bright pencils of light, apparently converging to a point near the invisible centre of the rainbow. What is the explanation of this phenomenon? C. MANSFIELD INGLEBY. Birmingham. _Cardinal Bentivoglio's Description of England._--A MS. of this interesting work exists among Bishop Tanner's MSS. in the Bodleian Library. Has it ever been printed? The account is said to have been drawn up with great care and accuracy, and betrays no sinister views. Did Cardinal Bentivoglio visit England in person, or how did he collect his information? EDWARD F. RIMBAULT. _Remarkable Signs._--Can any of the learned contributors of the "N. & Q." oblige a CONSTANT READER with the probable meanings or origins of the following signs, all of which are to be found in the London Directories: