Scientific Intelligence — Meteorology. 389 



of the year up to September, it being also very high in 

 all parts of England. 



This 13th of June is the last of a series of nine remarkable days 

 (which I have elsewhere described*}, separated by intervals of 

 about four lunations, each day being distinguished by an earth- 

 quake, an extraordinary oscillation of the sea, or some very unusual 

 state of the atmosphere ; and each of the phenomena beino- within 

 forty-eight hours of the moon's first quarter. Three f of the days 

 wei-e each at the moon's first quarter nearest the solstice, and were 

 remarkable for great thunder-storms, while the first and last of these 

 three days were distinguished also by extraordinary oscillations of 

 the sea. 



In reference to the six known | shocks of the earth, and extraor- 

 dinary oscillations of the sea, in Cornwall, during the last century, 

 I may here remark, that the interval between any two of them is 

 almost exactly some multiple of a lunation. The same observation 

 applies to the six which have occurred in the present century, ex- 

 cept that of the 20th October 1837 ; with this single exception, all 

 have happened at or near the moon's first quarters. 



From the facts above noticed, it would appear that an earthquake, 

 or any very distui-bed or extraordinary state of the atmosphere, is 

 usually preceded or followed by other earthquakes or extraordinary 

 states of the atmosphere, occurring at intervals of single lunations, 

 or of multiples of a lunation ; and that the phenomena which hap- 

 pen at intervals of four lunations are generally more striking than 

 those which occur at shorter periods. 



Penzance, 2d fieptemher 184.5. 



SCIENTIFIC INTELLIGENCE. 



METEOROLOGV, 



1. The TemperaUtre of Rain-Drops. — On the temperature of 

 the drops of rain in Cumana, which falls to 22-3° C. '"J2-l° F.) 

 when the temperature of the air shortly before had been 30°-31° 

 C. (86''-87-8° F.), and sinks during the rain to 23-4'' C. (75-1° F.), 

 vide my Relat. Hist., t. ii., p. 22.— The raindrops, as they fall' 



agitation at the harbour's mouth. This had been preceded by a heavy 

 and brief wiiirlwind from the SE. The rise of the water appeared to 

 be about three feet, and its sudden receding produced the agitation." 



* In a paper on this subject read at the British Association ineetinff 

 in 1845. ** 



t 6th of July 1843, 23d of June 1844, and 13th June 1845. 



t The dates are given in the Trans, of the Geol. Soc. of Corn , 1843 

 p. Ill, and 1844, p. 209. 



