METEOROLOGICAL JOURNAL. Hi 



NOTES. 



TSoel/th M»nth 7, 8. Mnch wind; showery. 9. The wind at 9 

 a. m. E , yet sounds came freely from the westward, together with the 

 clouds. Nimbi: rainhow; showers through the day; a brilliant twi- 

 light. 10. A gale of wind as m., then fair. 12. A dripping mist. 14. 

 Clear day; an extensire redness on the twilight. 



N. B. The regular chain of notes will now suffer a few weeks' inter- 

 niption, by the removal of the author to London : the temperature, 

 wind, and rain, are registered at Plaistow, as usual. 



First Month 2, 18l2. About 10 a. m. there having been no rain for 

 a considerable time, a few light clouds, just formed, and coming from 

 the westward, suddenly exhibited a segment of a rainbow, terminating 

 above and below, at the edge of the mass of cloud. As the latter ad- 

 va'nced by the north, and became denser, the arch increased, and be- 

 came at length nearly complete ; the eastern extremity descending 

 towards the earth, with the usual appearance of raiu under the clouds. 

 The western end now began to fade, and was soon reduced to a pale 

 white, which gradually pervading the whole, this pleasing phenomenon 

 disappeared, having lasted about ten minutes. It afforded an example 

 of r«in, formed and propagated in the atmosphere with such rapidity, 

 as scarcely to give time for the previous appearance of buoyant drops in 

 the form of cloud. The observation was made About four miles N. of 

 Londoa. 



RESULTS. 



Prevailing winds westerly. 



Barometer: highest observation 30*20 inches; lowest 2S'gO iaclies; 

 Mean of the period 29 708 inches. 



Thermometer: highest ojbservation 54° ; lowest 21°; 

 Mean of the period ss-oe®. 



Evaporation 1-21 inches. Rain 273 inches, includins^ several pro- 

 duct! vf snow. 



L. HOWARD. 



London., 



First itfo. 18, 1812. 



XI. 



