SAMUElv PIERPONT LANGLEY. x7 



1875. Astronomic. Sur la temperature relative des diverses regions du Soleil. 

 Premiere partie : les noyaux noirs des taches. Comptes Rendus 

 Academie des Sciences, Paris, Janvier-Juin, 1875 (March 22), vol. 80, 

 pp. 746-749- 



1875. Astronomic. Sur la temperature relative des diverses regions du Soleil. 

 Deuxieme partie: Region equatoriale et regions polaires. Note de 

 M. Langley presentee par M. Faye. Comptes Rendus Academie des 

 Sciences. Paris. Janvier-Juin (March 29), 1875, vol. 80. pp. 819-822. 



1875. Astronomic. Etude des Radiations superficielles du Soleil. Note de 

 M. S. P. Langley, presentee par M. Faye. Comptes Rendus Academie 

 des Sciences. Paris, Juillet-Decembre (September 6), 1875, vol. 81, 

 pp. 436-439. 



1875. The Solar Atmosphere: An Introduction to an Account of Researches 

 made at the Allegheny Observatory. American Journal of Science 

 and Arts, New Haven, vol. 10, Supplement No. 1875, pp. 489-497. 



1875. The Solar Atmosphere: An Introduction to an Account of Researches 



made at the Allegheny Observatory. From the American Journal of 

 Science and Arts, New Haven, vol. 10, Supplement No. 1875, pp. 

 489-497. 



1876. The Solar Atmosphere ; An Introduction to an Account of Researches 



made at the Allegheny Observatory. Proceedings of the American 

 Association for the Advancement of Science, 24th meeting, Detroit, 

 Mich., August, 187s; Salem, 1876, pp. 78-89. 



1876. Professor Langley's Views Respecting the Alleged Discovery of "Vul- 

 can" — Directions for Observing. New York Daily Tribune, October 

 3, 1876, vol. XXXVI, No. 11,080, p. 4. 



1876. Measurement of the Direct Effect of Sun Spots on Terrestrial Climates. 

 Monthly Notices of the Royal Astronomical Society, London, No- 

 vember, 1876, pp. 5-1 1. 



1876. Measurement of the Direct Effect of Sun Spots on Terrestrial Climates. 



Reprinted from the Astronomical Society's Monthly Notices, Novem- 

 ber, 1876, pp. 3-1 1. 



1877. The First "Popular Scientific Treatise." Popular Science Monthly, 



New York, April, 1877, pp. 718-725. 

 1877. Astronomic Physique. Nouvelle methode spectroscopique. Note de 



M. Langley, presentee par M. Faye. Comptes Rendus Academie des 



Sciences, Paris, Janvier-Juin, 1877, vol. 84, pp. 1145-1147. 

 1877. Nouvelle Methode spectroscopique. (Separate.) Comptes Rendus 



Academie des Sciences, Paris, pp. 1-3. 

 1877. On the Possibility of Transit Observation without Personal Error. 



American Journal of Science and Arts, New Haven, July, 1877, vol. 



14. PP- 55-60. 

 1877. On the Possibility of Transit Observation without Personal Error. 



From the American Journal of Science and Arts. New Haven, July, 



1877. vol. 14, pp. 55-60. 

 1877. A Proposed New Method in Solar Spectrum Analysis. American 



Journal of Science and Arts, New Haven, August, 1877, vol. 14, pp. 



140-146. 

 1877. A Proposed New Method in Solar Spectrum Analysis. From the 



American Journal of Science and Arts, New Haven, August, 1877. 



vol. 14, pp. 140-146. 



