. Commentarii Academiae scientiarum imperialis Petropolitanae. CirmjnzTrf-. jiccui. J'c 7am. 23C 7ai>. 3Clr j?. <3 -/-/. 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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