JOURNAL OF PROCEEDINGS. 553 



The following publications were received : 



Sitzunffsb. der K. Akad. der Wissenschaften, Band L., Heft 2-5, li- 

 Heft 2-3, Wien, 1865 ; Register zu den Banden 43-50, from the Acad- 

 emy. Canadian Journal, No. 60, Nov., 1865, Toronto, from the Insti- 

 tute. Theory of Parallels: Demonstration of the celebrated Theorem, 

 Euc. I., Axiom 12, by Matthew Ryan, Washington, 1866, from the Au- 

 thor. Proc. Acad. Nat. Sciences, Philad., vol. vii., 1854-5, from Dr. 

 Shumard. Proc. Boston Soc. Nat. Hist., vol. x., pp. 17-48, 1865, from 

 the Society. Senckenbergische Naturf. Gesellschaft : Jahresbericht, 

 Jahrg. 1862, Frankfort, 1865, from the Society. K. K. Geol. Reichsan- 

 stalt : Jahrbuch, xv. Band, Jan. -May, 1865, Wien, from the Society. 

 Report of the Corn's of St. Louis Water Works, from Dr. Sander. 



Dr. Engeluiann presented from Mr. Feuchtwanger a speci- 

 en of crystalized borax from a lake in California. 



James Leete, M.D., and Nathan Hayward, M.D., were 

 elected Associate Members. 



February 5, 1866. 

 The President, Dr. Engelmann, in the chair. 



Eight members present. 

 Publications received : 



Me'moires de l'Acad^mie Imp. des Sciences de St. Petersburg, T. v., 

 No. 1, 1862, T. vii., 1-9, viii., 1-16 ; Bulletin, T. vii., 3-6, T. viii., from 

 the Academy. Nova Acta Reg. Soc. Scientiarum Upsal., vol. v., fasc. 2, 

 1865, from the Society. 



Dr. Englemann made some remarks upon specimens ex- 

 hibited of a fibrous material from the Albutilon AvicenncB, 

 and cocoons found upon the same, suggesting the question, 

 whether the caterpillars use this and the 3Iorus papyrifera 

 as the elements of the silk they make. 



Some remarks were made upon the appearance of frost on 

 the stems of Actinomeris helianthoides. Dr. Engelmann 

 observed that he had seen a similar appearance on the dead 

 stems of the Verbesina Yirginica also, and connected it with 

 the wings of the stems of these plants and their porous pith. 



Dr. Shumard submitted some observations on the distribu- 

 tion of the Echinodermata. 



February 19, 1866. 

 The President in the chair. 



Eight members present. 



Dr. Boisliniere presented some specimens of Nutmeg from 

 the island of Guadaloupe. 



Dr. Wislizenus remarked that his observations with the 

 Electrometer proved that instrument to be a more delicate 

 and sensitive indicator of the approach of storms than the 

 barometer. 



