IS 14.] and on Vegetation 



s— •• 113 



Tlic changes of temperature happen to coincide with those in 

 the upper Langhjerdes spring at Upsala. Hence the mean tempe- 

 rature of the earth here is probably 4<V6°. 



The mineral spring of Suderkbping, called Ragnilds-kMla, at the 

 south gate of the town, is the finest spring of the kind that I have 

 seen in the southern provinces. The water rushes out with such 

 impetuosity that it is not possible to place the thermometer in the 

 bason itself. I found its temperature as follows : — 



1810— 8 September 45SG 



181 1—27 May 45-S6 



Such an agreement puts the mean temperature of the earth in 

 this place out of doubt. It may appear high when compared with 

 that of the preceding springs ; but the observations at Upsala have 

 shown us that the highest temperature always belongs to the con- 

 stant springs. Of plants I may notice the walnut, which frequently 

 grows here to a large tree and bears fruit ; which, 1 know well, is 

 not the case farther north. 



A spring in a rivulet at Knapphdla, in the northern part of the 

 county of Calmar, gave, on the 9th Sept. 1810, 4f>-32°. 



The small spring at the Inn of Lund, near the town of JVester- 

 wick, gave a more inconstant and smaller result. It was— 



1810 — 10 September 44'G° 



17 Ditto 44-6 



1S1 1—29 May 40.44 



On the other hand, Warnaby spring gave a still higher estimate. 

 It lies the eighth part of a Swedish mile west from the country- 

 house of Wdtrnanas, in Sodermere. The bason of the spring is 

 almost two fathoms deep, and the quantity of water which it yields 

 is always equally great. Its temperature was— 



1810 — 13 September 4G'7G° 



1811 — 1 June 46'4 



Here the mean temperature of the earth may be estimated at 



from 4676 to 47-12°; an estimate which is the more important, 



because it u here that we must place the northern limit of the 



We find indeed some beech bushes farther north, as at 



Uongelslat, in the parish of Rysby; but the first beech woods 



■ their appearance at (Farnanas, and there only on the level of 



the sea. Farther inland the tree, though planted, does not thrive. 



Micro- are no beech woods in the interior till wc come to Iameo,i 



Blecktnge. ° ' 



My endeavours to obtain a greater number of good observations 

 near the hue of the beeches were not successful. Near the meadow 

 ds, in the parish of Suderokra, there ii a strong spring, 

 the '< mrx rature of which was as follows :^- 



V'ol. IV. N II, II 



