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o 3. 18 34. 4. De la Soeicty philosophiquo Philadelphie. l. Transactions of the merican philosophical Societ hel a Philadelphia Vol. IV. P. III. 1834. 4. 2. Bepor on eight and mea sures Philad. 183 4 8. De M. de Ti:ΗERTnor , Membre de a Sociύ-