JOseph Postle, son of John Postle, of Ingham in Norfolk, until about the age of seven years was an healthy well-looking child; but about that age was afflicted with stoppages, which often threw him into convulsive fits, and at last rendered him quite an idiot. He continued in this condition for about four years, eating and drinking all that time any thing that came in his way, even his own excrements, if not narrowly watched. His father took the advice of several eminent physicians, both at Norwich and elsewhere; but all their prescriptions proved of no service. About the beginning of August last he happened to get at a painting-pot, wherein there was about a pound of white lead and lamp-black mixed up with linseed oil. This he eat almost all up before he was discovered. It vomited and purged him, and brought away prodigious numbers of small worms. In a few days he grew well, his senses returned, and he is now able to give as rational answers as can be expected from a boy of his age. His appetite is good, he is very brisk, and has not had the least return of his former disorder. I heard of the above by several people; but not being satisfied, got my friend to go to Mr. Postle’s house, of whom he had the foregoing account. January 12th, 1758. LXVII. _An Account of the extraordinary Heat of the Weather in_ July 1757, _and of the Effects of it. In a Letter from_ John Huxham, _M. D. F.R.S. to_ Wm. Watson, _M. D. F.R.S._ [Read Feb. 2, 1758.] I Find by your letter, that the heat at London was not so great in the beginning of July 1757, as at Plymouth by two or three degrees of Fahrenheit’s thermometer. We had again, after much rain at the close of the month, and in the beginning of August, excessive heat; _viz._ on the 8th, 9th, and 10th of August; which mounted the mercury in that thermometer to 85; nay, on the 9th, to near 86. I never before remember the mercury in that thermometer to exceed 84; and that is even here a very extraordinary degree of heat.