A manufacturer of carmine, who was aware of the superiority of the French colour, went to Lyons for the purpose of improving his process, and bargained with the most celebrated manufacturer in that capital for the acquisition of his secret, for which he was to pay a thousand pounds. He was shown all the processes, and saw a beautiful colour produced, yet he found not the least difference in the French mode of fabrication and that which he had constantly adopted. He appealed to the manufacturer, and insisted that he must have concealed something. The manufacturer assured him that he had not, and invited him to see the process a second time. He minutely examined the water and the materials, which were the same as his own, and, very much surprised, said, “I have lost my labour and my money, for the air of England does not permit us to make good carmine.” “Stay,” says the Frenchman, “do not deceive yourself: what kind of weather is it now?” “A bright sunny day,” said the Englishman. “And such are the days,” said the Frenchman, “on which I make my colour. Were I to attempt to manufacture it on a dark or cloudy day, my result would be the same as yours. Let me advise you, my friend, always to make carmine on bright and sunny days.” “I will,” says the Englishman; “but I fear I shall make very little in London.” POIET.—Your anecdote is as much to the purpose as Physicus’s; yet I am much obliged to you for the hint respecting the effect of shadow, for I have several times in May and June had to complain of too clear a sky, and wished, with Cotton, for A day with not too bright a beam; A warm, but not a scorching, sun. HAL.—Whilst we have been conversing, the May-flies, which were in such quantities, have become much fewer; and I believe the reason is, that they have been greatly diminished by the flocks of swallows, which every where pursue them: I have seen a single swallow take four, in less than a quarter of a minute, that were descending to the water.