. A century of progress in the natural sciences, 1853-1953. Natural history -- History; Natural history. 770 A CENTURY OF PROGRESS IN THE NATURAL SCIENCES 'fc'-^ 1^3 II. r* 1 if-W ^^; e^iy ""^i ⢠j = i ! >y t , ' ^ â â : I- :* I- '"â '.. ^ -9- - â ' '^ ''>. /A -Ami i '-J- J ,- . ^A^^fi^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California Academy of Sciences. San Francisco

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Keywords: ., bookcentury1900, bookpublishersanfran, booksubjectnaturalhistory