102 On the Heat of Springs, [Aug. 



ii) considerable quantity ; and, finally, that the albumen in caviar 

 exist- in two stales, namely, soluble and insoluble in water, but 

 that the insoluble portion is by far predominant, and in a much 

 greater quantity than in any other ova hitherto examined by me. 



Article VI. 



Observations on the hhat of Springs, and on Vegetation, in order 

 to determine the Temperature of the Earth and the Climate of 

 SweSen. By George Wahlenberg, M.D. Fellow of the Royal 

 Academy of Sciences of Stockholm. 



{Continued from p. 31.) 

 III. 



Observations on the Heat of Springs, and on the Nature and Dis- 

 trict! Lion of Plants in the Northern Provinces of Sweden, in order 

 to determine the Climate of these Parts. By George Wah- 

 lenberg.* 



. As the variable springs reach the lowest point of their tempera- 

 ture in spring, and the highest point towards the end of August, 

 or somewhat later, it is only requisite for us to make some observa- 

 tions on them during the few summer months in order to discover 

 the whole scale of their variations. The Royal Academy of 

 Sciences at Stockholm recommended these observations to my 

 attention during my journey to the mountains of Umcu Lappmark, 

 and requested mc, both on my way thither, and as I returned 

 again, to examine the temperature of all the springs that I hap- 

 pened to meet with. I left (Jpsala in the middle of June, 1S10, 

 and returned to it again at the end of August. 



1 arrange the observations which 1 made during that journey 

 according to the provinces over which I travelled. 



Mnndung, on the river Dal ; N. lat. 60^-°. 



There is a fine spring at Mehede, which rises at the bottom of a 

 rock. Its temperature was, on the 18th June, 4J-0S ; on the 

 24th August, 42'26 9 . It is therefore as constant in its temperature 

 as can be expected in a spring. 



A spring at Grimsarbo gave, on the J 8th June, 4 1*90 ; but on 

 the 24th August, 46 01°. 



The temperature of 42'2<» Q is very low, when compared with that 

 of Upsala, which is 43 - 7<>°. It is but seldom that we have an 

 opportunity during a single journey to observe so great a difference 



* Kongl. Vcteusk. Acad. Nya Hand). !811. 



