538 Remarks upon the Winter of 1829-50, 



plants, one of which flowered red, and the other six white, 

 tinged more or less with light pink, and having a bright pink 

 eye. I wish I could persuade some of your correspondents 

 to try similar experiments, in different parts of the kingdom, 

 upon any of the various plants which approach each other so 

 nearly as to leave it still a matter of doubt whether they ought 

 to be considered distinct species or mere varieties of the same. 

 I have some of them under trial, and propose sending you 

 the results from time to time ; but, as accidents are unavoid- 

 able, it would be more satisfactory to see them confirmed from 

 different quarters. 



I remain, Sir, &c. 

 Cambridge, September 17. 1830. J. S. Henslow. 



Art. XIT. Some "Remarks upon the late Winter of 1829-30, and 

 upon the general Character of the Weather which preceded and 

 followed it. By the Rev. Leonard Jenyns, M.A. F.L.S. 



The late winter having been more severe than what is 

 usually experienced in this climate, it may not be without in- 

 terest, or without some benefit to the science of meteorology, 

 to record a few particulars connected with its commencement 

 and duration. 



In the first place, it is worthy of observation that it was 

 preceded by a remarkably wet and cold summer.* What the 

 exact quantity of rain was which fell in the course of that sea- 

 son, I am not prepared to say, not having made any regular 

 measurement of it ; but, from other memoranda which I pre- 

 served, it appears that at Swaffham Bulbeck, in Cambridge- 

 shire, the number of wet days which occurred in the months 

 of June, July, August, and September, 1829, was 14, 20, 19, 

 and 14 respectively. The mean temperature, calculated from 

 the observations made, in most instances daily, at the hours 

 of 9 A. M. and 8^ p.m., was, for June 60*4°, for July 60*7°, for 

 August 58-2°, and for September 53-4°. 



It will be remembered that the summer of 1828 was like- 

 wise characterised by the great quantity of rain which fell at 

 intervals more or less throughout the season ; but in that in- 

 stance the bad weather was observed to clear off in a great mea- 



* This fact is very much in accordance with some observations by Mr. 

 White, who, in his History of Selborney mentions two or three instances of 

 long and severe frosts which set in after very rainy seasons. (See his 62d 

 Letter to the Hon. Daines Barrington.) 



