^ Dr. E. Purkyje Mäy 27#. I878 



which depend on rain and temperatures- (öbowmelt, ice-flow, frost),, 

 and had sucoess, so that the prusslan ministry made available ta 

 me the median daily temperatures and precipitatioir from the Ger- 

 man Station in the Elbe district. This convinced also the Austriarr 

 ministry^ and I was invited to Vienna, to hold lectures about ray 

 works». I showed the water levels of the Elbe from 18^1 - 1877,. 

 and the daily temperatures and rairr f rom 1848 - 56 and the monthly 

 medianem and totals from- 18M - 1875» . therr the dif f erenees of the 

 yearly totalst of all 1 gerraan, , austrian and frencft stations of the 

 averagea fromr 1?64 - 1870Q the differences of the yearly totale of 

 all stations- of the United States from 1825 - 186?, the monthly dis- 

 tribution of rain- of the year 1870'in Russia,which cannot be explainetf 

 otherwise in the plains but througHr arbitrary cloud formations,, 

 f inally a large map of the worldd with the rain, forests, steppes 

 and deserts. About this I lec tu red", and g AnlahcA besides the less 

 f lattering applause of the big shots,who do not understand anythingr 

 about the matteir,, the raost welcome praise of Dr. H a rn and the pro- 

 mise of all the raaterial! f or my studies. The best part is however,, 

 that, thanks to the official acceptance of my metereological ! ideas, , 

 I do not need to work on them in such a haste, and, thus there re - 

 mains more time for botany.» these lectures and demonstrations were 

 immediately useful ! f ro my botanical projects ,because, when I took- 

 leave from the minister, Count Mansfeld-, and thanked him for his 

 particlpatiom mentioning with regret,that ray real' pro ject f , the 

 microscopic study of the corifers-, is not progressing, becau.se the 

 metereological studies do not leave time to cora^lete thenr, and be- 

 cause I live in a smalll Community; where I cannot give weekly de- 

 raonstrations with the microscope in a learned society. 7 , to present 

 the many/new discoveries to a learned public, and because, f inally*,, 

 I am not able to complete the cross-cuts or have them made, which 



01 2 3 456789 10 

 cm Copyright reserved 



