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New Mexico, nearly also in Texas. I have not touched upon a fourth continent flora 

 and fauna, which in North America in the East and, when one departs from the Atlantic, 

 in the center almost more than in the West and there more in the high mountains foes 

 far to the South and has varieties in common with North European and Asian, the 

 Artic, which Wallace entirely unnecessarily separates into palaearchtic and neartic. 

 I considered the geologic Interpretation as indispensable in botany and zoology. When 

 one thinks that in the tertiary in Europe one finds East and West American and Mexican 

 conifers, in Jura Japanese, in Trias Laplandish, in Rhole Australien, and in fact 

 in numerous forms, that one becomes conscious that the American varieties of today 

 did not originate through climatic influences and that some form-rich variety like 

 Pinus ponderosa , by no means contains new forms, yes not even all forms which it 

 previously possessed. 



Secondly, one becomes a different picture of the migration of the varieties, if 

 if we keep the Separation union of the continents with all that lives upon them, in 

 mind, and the flora and fauna teach us to think of other geological occurences» 

 I would like to have leaves of California oaks, to see if in their structure they are 

 as similar in form as the European (according to Liebmann's illustrations) . Since 

 the Japanese deviate considerably, the connection with the old world appears either to 

 have gone northward, or did the Chinese-Japanese flora and faune, which has so much in 

 common with the Himalayan, migrate from the South to its present terrain, which, 

 however, probably without previous devastation of these regions, as happened in Europe 

 during the ice period, could not take place, because occupied terrain will not be 

 settled. If you have anything for me, wood, cones, seed, occasionally fresh acorns, 

 which one can sow, cuttings of willows and poplars, shoots of Rubi , which even if 

 not definitely, nevertheless probably are American, then please think of me. If I will 

 soon get to illustrate the pines I do not dare to promise. A Russian, who studied 

 here, promised to send me a new drawing instrument from Petersburg, which possibly 

 could expedite my drawings, but it has not yet arrived. As soon as it arrives and I 

 am successful with my drawings, I will send you some. 



About Lambertiana I am very much in the dark. A tree, which here in the vicinity 

 has cones, which have scales like my California tree, only that they are 8 inches 

 long, whereas the California one is 20 inches long, has the needle cross-section of a 

 genuine Strobus and in cross-section is difficult to dif ferentiate from excelsa , which 



moreover here has 3 times longer needle than Lambertiana , whereas the needles which 



you sent, as well as a young seedling which I have here, much smoother needles and 

 are more similar in cross-section to the monticola . Roezt writes me that Ayacahuyte 



