1S14.] and on Vegetation. 33 



1S10— 13 May 43-16° 1S10— 26 September 43-34° 



26 August... 43-16 27 October.. 43-34 



This is the only constant spring at Upsala, whose temperature is 

 lower than the mean temperature of the earth for Upsala. The 

 other springs agree better with the results formerly obtained. 



Staby spring, in the parish of Naes. spouts up strongly from the 

 bottom of a high sand hillock : — ■ 



1S10— 14 May 43-7')° 



27 August 43-70 



Priest's well, at Haga, mentioned before, rises at the foot of a 

 hillock ten fathoms high. The stability of its temperature is in 

 some measure regulated by the Quamber rivulet, which runs by 

 the foot of the hillock. I found it as follows :— - 



1809— 5 November 44-06° 1810—30 May 43-70° 



29 43-79 25 August . . 43-88 



1810—25 May 43'70 25 September 43-8S 



Mill spring (Quernkalla), at Upsala. It is surrounded by * 

 small heap of stones: — 



1809—12 November 43-97° 1810—29 March ... 43'79° 



27 43-88 13 May 43'70 



1810— 17 January.. 43'79 31 August .. 44-06 



24 February . 43'79 30 October . . 43'88 



Brdnnerey, or Sadviks, spring, mentioned before: — 



1809—21 November 43-88° 1810—26 April .... 43-goo 



26 43-88 11 May 43-61 



22 December 4379 30 August . . 43^0 

 1810—28 January . . 43-88 28 September 43*88 



23 February . 43'79 30 October . . 43-88 

 29 March . . . 43'79 



I conceive that at a greater depth the Myrlygard and Sandvik 

 springs would agree in their temperature, and that the difference 

 between them is owing to the effect of the current immediately 

 under the surface. J n order to examine this effect, I sought for 

 springs rising directly out of the earth at the bottom of Takes or 

 rivers. 1 found two springs of this kind in the neighbourhood of 

 Upsala. 



A little below the tile manufactory, one-eighth of a Swedish 

 mile horn the town, a spring rises with a strong current in a 

 nvulet. its temperature, on the 23d of September, 1810, was 



4.)*/ O . 



The remarkable spring of Stromsholm rises from the bottom of 

 the lake Ladugard, in a creek in the great stream, and not far from 

 Lamrertgard. Some hundred veins at the depth of 12 feet below 



Vox.. IV. N° I. C 



