REPORT OF THE ASSISTANT SECRETARY. 63 



(172.) Palaeontology of the Upper Missouri. By F. B. Meek aud F. V. 

 Hayden. 4to. 



(16-5.) Monograpliof North American Bats. By Harrison Allen, M. I). Svo. 



(173.) On the Microscopic IS fracture of the Medulla Oblongata and the Tra- 

 pezium. By Dr. John Dean. 4to. 



(175.) Discussion of the Magnetic and Meteorological Observations of Girard 

 Colkge. By Prof. A. D. Bache. Part VII, VIII, IX. 4to. 



(179.) List of publications of learned societies, periodicals, and encyclopaedic 

 works in the library of the Smithsonian Institution, July 1, 1863. 



(178.) Monograph of North American Ilymenoptera. By H. De Saussure. 

 Part I. Edited by Edward Norton. Svo. 



