The fire was that caused in York Minster on the 2nd of February, 1829, by Jonathan Martin, who, as the question says, was subsequently discovered to be out of his mind. Having taken it into his head that it was his duty to destroy the cathedral, he concealed himself after evening service on the 1st of February behind a monument in the north transept, and in the night collected inflammable material which he set fire to. The whole of the beautiful tabernacle work of carved oak, the stalls, the pulpit, the organ, the roof, and much of the stonework of the choir, were all destroyed, the east window which was in great danger, being saved with difficulty. The building was restored at a cost of about £65,000, which was raised by a national subscription. This question was well answered. A few girls gave instances of fires at the cathedrals of Carlisle and Salisbury, but the insane incendiary was left out of account. Four or five gave the burning of St. Paul’s in the Great Fire of 1666, as that well-known event is described in Mr. W. Harrison Ainsworth’s _Old St. Paul’s_, but they should have remembered that a novelist’s facts should be verified before quoting them as history. =41. What is the best diet for brain-workers?= There is no doubt that brain-workers—whether literary, professional or business people—need the best of food served in the most agreeable manner, and in variety and abundance. If it were possible to live by brain alone, without any exercise of the muscles, then the diet might be exclusively confined to those articles which contain the fat, salt and phosphorus of which the brain is composed. But this being out of the question, a wide variety of food is necessary for the brain-working classes, its quantity and quality being adapted to nourish the whole body with special reference to the nervous system. An important point is that the food be light and easily digested. Most girls answered this question, and many sensible replies were received. =42. What saint was so able a musician that, according to tradition, an angel descended to earth enraptured with her melodious strains?= Few queries were better or more fully answered than this one, the essence of most of the replies being that the saint was St. Cecilia, a young Roman lady of noble birth, who suffered martyrdom about 329—perhaps earlier. She “has long been regarded as the tutelary saint of music and musicians, but the period at which she was first so looked upon is involved in obscurity.” When the tradition mentioned in the question originated is equally unknown. It is an odd fact that early writers make no mention of her skill in music. =43. What is the origin of the three ostrich feathers as a badge of the Prince of Wales?=