made fix times every Day. At which Times is obferv'd, ift, The rifing or falling of the Quickfilver in the Barometer. 2dly, The Alteration of the Hygrometer. 3dly, The Rife or Fall of the Spirits in the Thermometer. 4thly, The Point of the Compass from whence the Wind blows, and as near as can be guess'd with what Strength. And 5thly, Whether Rain, Snow, Hail, &c. and what Quantity fallen. Each Leaf of the Book defign'd for this Use must be divided into several Columns; the first for the Day of the Month and of the Week: The second, for the Number of Inches and Parts of an Inch in the Tube of the Barometer, where the Quickfilver ftands at the time of Obfervation. The third, to mark the Degrees pointed at by the Index of the Hygrometer at the fame Time. The fourth, to fhew the Number of Inches and its Parts in the Thermometer, where the Spirit ftands at the Time of obferving. The fifth, to mark the Winds, and their Strength. And the fixth, for the Quantity of Rain falling, and Difpofition of the Clouds and Air. But I fhall give an Example of five or fix Days in the Month of June 1721, taken from the Book I mention, that whoever will be curious in this Way, may keep their Weather Books after the fame manner, to be more eafily comparcd, and the Difference of Weather or Strength of Heat and Cold in feveral Parts of Britain may be known. But in this Cafe we must re member member what I have faid before, that all the Thermometers fhould be firft regulated by one Standard. N. B. In the Column of the Barometer, I. ftands for Inches, and P. for the Number of Parts of an Inch. Friday, Barometer.. Divifion and Parts. Thermometer. Friday, JUNE 2. 1721. I. P. Wind. Weather. 9 Morn-29 98 240 30 Eaft, brisk Cloudy. ing, Gale. Noon, 29 98 260 28 Eaft, Dit- Ditto. |