— 227 — 



Observations phénologiques dans le canton de Berne, dans 

 l'année 1873. 



Juslus Freih. von Liebig zum Gedtichtniss Rede, von D"" 

 Max von Pettenkofer. 

 Du même, als Begriinder der Agrikultur-Chemie, von Aug. 

 Vogel. 



Bulletin of the Essex Institute. Vol. V, 1873, n« 1-12. 



Fifth Annual report of the Trustées of the Peabody Acad. of 



Se. for the Year 1872. 

 The american Naturalist a populare illustrated Magazine. 



Salem Vol. VI n» 12, Vol, VII n^ 1-12, Vol. VIII, n« 1. 



Proceedings of the Academy of natural Sciences of Phila- 

 delphia, année 1873. 



Smithsonian Report 1872. 



U.-S. Geological survey of the Territories for 1867-1869, F. 

 V. Hayden. 



Du même, Lists of élévations in thaï portion of the united 

 States west of Mississipi river. 



Du même, Descriptive of the Photographs of the united states 

 geological survey; 1869-1873. 



Du même, Meteorological observations in Utah. Idaho and 

 Montana, by H. Gannett. 



Du même. Bulletin geological and geographical survey of the 

 Territories, n« 1, 2, 1874. 



Annals of the Lyceum of natural history of New-York. Vol. 

 X, no 8-11. 



Proceedings du même, vol. I, fol. 237-300. Seconde série 

 1873, fol. 1-32. 



Synopsis of the Flora of Colorado, by T.-C. Porter and J.-M. 

 Couiter. 



Agassiz the Lessons of His Lise. Lecture by L.-P. Luse, 1874. 



Acrididœof north América, by Cyrus Thomas, Ph.D., quarto. 



Contributions to the extinct vertebrate Fauna of the Wes- 

 tern Territories, by Joseph Leidy. T. I, quarto. 



