. Commentarii Academiae scientiarum imperialis Petropolitanae. 'tnwnt. ^^,;r,/.'/',. m. T,;/,. .1/;. (%.^ 2- (JZf^^. ^^^ '«-^. 1# _^ > 1^./ J. 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 Imperatorskaia akademia nauk (Russia). Petropolis, Typis Academiae

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