1419 Taylor St San Francisco Jan 13th '78 My Dear Prof' Gray, I had intended writing you concerning the forests we passed through after parting, but the exploration of the Middle Fork Canyon of Kings River prevented me. We travelled through more than 150 miles of yellow pine, and though I had already made up my mind concerning its varieties, our Shasta discussions provoked fresh interests and I accordingly reviewed the whole question. In many places the most widely varied forms were found growing together and I examined several hundred of them with the utmost care. Nothing within the range of these observations point to the Jeffrey form as a distinct species. On the contrary, my former views regarding it, of which you have already heard enough, or more than enough, are outdated. Nowhere within the limits of California are the forests of the Yellow Pine so extensive or exclusive as on the headwaters of the Pitt River. They cover the mountains and all the lower slopes bordering the wide open valleys that abound here, pressing forward in imposing ranks, seemingly hardiest and most firmly established of all the California conifers.
San Francisco [Calif.]
1878 Jan 13
Original letter dimensions: 21 x 31
Royal Botanic Gardens, Kew. Directors' Correspondence 199/310-311
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DC 199 f 310 image 1
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