Strange and beautiful colour photos from Russia 1900-1915ish

These photos are from the Denver Post website.  Here is the introduction that accompanies the photos.

"The photographs of Russian chemist and photographer, Sergei Mikhailovich Prokudin-Gorskii, show Russia on the eve of World War I and the coming of the revolution. From 1909-1912 and again in 1915, Prokudin-Gorskii travelled across the Russian Empire, documenting life, landscapes and the work of Russain people. His images were to be a photographic survey of the time. He travelled in a special train car transformed into a dark room to process his special process of creating color images, a technology that was in its infancy in the early 1900’s. Prokudin-Gorskii left Russia in 1918, after the Russian Revolution had destroyed the Empire he spent years documenting. To learn more about the Prokudin-Gorskii, the process he used to create the color photographs, and see his collection, you can visit the Library of Congress, who purchased his glass negatives in 1948 after his death in 1944."