18S8.] 27 [Letters received. 



Febiiian'- 1st, 1867 ; K. Gesellschaft der Wissenschaften zn Gottiiigen, Febniary 

 IGth, 1867; Massachusetts Horticultural Society, March 8th, 1867; Museum at 

 Bergen, Norway, March 9th, 1867; Societe rV Agriculture, Sciences et Arts de la 

 Sarthe, Lc Mans, March 23d, 1867; Socic^te des Sciences Physiques et Naturelles, 

 Zurich, March 31st, 1867; Madras Literary Society, April Gth, 1867; Society d^s 

 Sciences Physiques et Naturelle de Bordeaux, April 8th and 29tli, 1867 ; K. 

 Bohmische Gesellschaft der Wissenschaften, Frag, May 10th, 1S67; Societe Ento- 

 mologiquede Russie, St.-Pctersbourg, May 4th, 1867; K. Bohmische Gesellschaft 

 der Wissenschaften, Prag, May 25th, 1867; Society Linu{?enne de Bordeaux, June 

 6th, 1867; Acad(5mie des Sciences, Arts et Belles Lettres de Dijon, June 16th, 

 1867; Verein flir vaterlandische Naturkunde in Wiirttemberg, July 1st, 1867; 

 Naturwissenschaftlicher Verein fiir das Fiirstenthum Liinebiirg, July 3d, 1867; 

 Entomological Society, London, September 20th, 1867; Naturforschender Verein 

 in Briinn, September 25th, 1867 ; Liverpool Geological Society, November 1st, 

 1867; Societe Imp^riale des Naturalistes de Moscou, November 4th, 1867; Ver- 

 waltungs-Ausschuss des Ferdinandeums zu Innsbruck, November 10th, 1867 ; 

 Verein der Aerzte in Steiermark, Graz, November 20th, 1867; K. Bayerische 

 Akademie der Wissenschaften, Miinchen, December 1st, 1867; Naturhistorischer 

 Verein in Augsburg, December 10th, 1867: Society Royale de Botanique de 

 Belgique, Bruxelles, December 21st, 1867; Naturhistorischer Verein fiir An- 

 halt, Dessau, January 31st, 1868; Naturwissenschaftlicher Verein fijr das Fiirst- 

 enthixm Liineburg, February 3d, 1867; Soci^t6 HoUandaise des Sciences a 

 Harlem, acknowledging the receipt of the Society's publications and presenting 

 their own. 



From the Naturforschende Gesellschaft in Danzig, April 12, 1867, acknowl- 

 edging the receipt of the Society's publications, and regretting that certain of 

 their own asked for are out of print. 



From the K. Gesellschaft der Wissenschaften zu Gottingen, October 10th, 

 1867, acknowledging the receipt of the Society's publications and pi'omisuig- to 

 supply certain of their own if possilile. 



From the Naturwissenschaftlicher Verein, Hamburg, August 1st, 1866; SocitJt^ 

 Royale des Sciences a LTpsal,two letters, October 1st, 1866; Naturforschender 

 Verein in Briinn, October 27th, 1866; K. Akademie der Wissenschaften, Wien, 

 October 30th, 1866; Superintendent of the Geological Sui-\'ey of India, Calcutta, 

 November 22d, 1866 ; K. Preussische Akademie der Wissenschaften, Berlin, De- 

 cember 10th, 1867; Senckenbergische naturforschende Gesellschaft, Frankfurt 

 am Main, December 10th, 1866 ; Naturhistorische Gesellschaft, Niirnberg, two let- 

 ters, December 31st, 1866; Societe Provinciale des Arts et Sciences a Utrecht; 

 Verein fiir siebenbiirgische Landeskunde, Hermannstadt, Jaimary 12th, 1867; 

 K. Bayerische Akademie der Wissenschaften, Miinchen, January 30th, 1867; 

 K. Akademie der Wissenschaften, Wien, February 20th, 1867; Directeur du 

 Mus(je publique de Buenos Aires, March 1st, 1867; Societe Entoraologique de 

 France, Paris, May 7th, 1867: Society of Rural Economy of Southern Russia, 

 Odessa, March 15th, 1867 ; K. Leopoldino-Carolinische Deutsche Akademie der 

 Naturforscher, Dresden, April 1st, 1867; Naturforschende Gesellschaft in Danzig, 

 April 4th, 1867; Utrecht Society of Arts and Sciences, April 15th, 1867; Natur- 

 forscliende Gesellschaft in Bern, April 1867; Soci6t(5 Entoniologique der Pays-Bas, 

 Leide, May 5th, 1867; Society HoUandaise der Sciences a Harlem, May 25th, 1867; 



