1870.] 329 [Annual Eeport. 



LETTERS RECEIVED 

 DURING THE YEAR ENDING APRIL 30, 1870. 



From the Academia Eeal das Sciencias de Lisboa, March 24th, 1868; Societe* 

 Linneenne de Bordeaux, April 6th, 1868; Accademia delle Scienze di Bologna, 

 May 4th, 1868; Academie Boyale, etc., de Belgique, Bruxelles, September 7th, 

 1868; Naturforschende Gesellschaft in Halle, September 9th, and October 20th, 

 1868; Naturforschende Gesellschaft in Zurich, September 80th, 1868; Natur- 

 forschender Verein in Briinn, October 28th, 1868; Bureau de la Becherche 

 Geologique de la Suede, Stockholm, November 1st, 1868; Societe des Sciences 

 Naturelles de Neuchatel, November loth, 1868; Naturforschende Gesellschaft in 

 Danzig, November 30th, 1868; Gesellschaft fur Ackerbau, etc., Briinn, Decem- 

 ber 1st, 1868; K. Akademie der Wissenschaften in Wien, December 14th, 1868; 

 Schweizerische Gesellschaft fur die gesammten Naturwissenschaften, Bern, Jan- 

 nary 1st, 1869; Naturforschende Gesellschaft in Bern, January, 1869 ; Essex 

 Institute, Salem, Mass., March 22d, June 17th, September 30th, October 14th 

 and 30th, November 17th, December 2d and 27th, 1869 ; Geological Museum, 

 Calcutta, March 30th, 1S69; Academie Boyale des Sciences de Lisbonne, 

 March 30th, 1869; Utrecht Society of Arts and Sciences, March, 1869; Societe 

 Imperiale des Naturalistes de Moscou, April 9th, 1869; Naturhistorischer Verein 

 der preussischen Bheinlande, etc., Bonn, April 15th, 1869; Smithsonian Institu- 

 tion, Washington, April 17th and 20th, and June 29th, 1S69; Madras Literary- 

 Society, April 18, 1869; Lyceum of Natural History, New York, May 3d and 

 10th, and December 13th, 1869; Accademia delle Scienze, Bologna, May 9th, 

 1869 ; B. Istituto di Scienze, Lettere ed Arti, Venezia, May 17th, 1869 ; Goth- 

 enburg Society of Science and Literature, May 20th and September 18th, 1869; 

 Mass. Horticultural Society, Boston, May 27th, 1869; American Philosophical 

 Society. Philadelphia, June 26th, 1869; Academy of Sciences, Chicago, June 

 28th, 1869; Prof. James D. Dana, New Haven, July 13th, 1869; Dr. John Torrey, 

 July 16th, 1869 ; Prof. J. W. Dawson, Montreal, July 17th, 1869 ; Naturfor- 

 schende Gesellschaft, Danzig, July 24th, 1869; Prof. Joseph Henry, Smith- 

 sonian Institution, July 27th, 1869; Trustees of New York State Library, 

 Albany, July 31st, 1869 ; Verwaltungs-Ausschuss des Ferdinandeums zu Inns- 

 brack, August 1st, 1869; K. Sachsische Gesellschaft der "Wissenschaften, 

 Leipzig, August 13th, 1869; Vorarlberger Museums- Verein, Bregenz, August 

 14th, 1869; Naturhistorischer Verein, Dessau, August 16th, 1869; Leeds Philo- 

 sophical and Literary Society, August 26th, 1869; Naturwissenschaftlicher 

 Verein, Bremen, August 31st, 1869; Zoologisch-mineralogischer Verein, Begens- 



