CONTENTS OF THE THIRD VOLUME. 
PART IX. 
Arr. I.—On the act of Impregnation and on Polyembryony in the 
higher Plants. By the late Dr. F. J. F. Meven, Professor of 
Bomuy in the University of Berlin .,........ ce+>,+ «see 
Arr. I.—On the Combinations of the Volatile Chlorides with 
Ammonia, and their Constitution. By Professor Hernricu 
PA ee ere ash maaink cue b vwey! x weebea g 
Art. III.—On the Composition of Stearic Acid, and the Products 
of its Distillation. By Professor Renrenpacuer of Prague 
Art. IV.—On the Action of Sulphurous Acid on Hyponitric Acid 
(peroxide of nitrogen); Crystals of the J.eaden Chamber; 
Theory of the formation of Sulphuric Acid. By M. F.De 1a 
Provostaye, Professor in the College of Louis-le-Grand .. 
Art. V.—An Investigation of the Furrows which traverse the 
Scandinavian Mountains in certain directions, together with 
the probable cause of their origin. By N. G. Serstrém .. 
Art. VI.—On a Method of Facilitating the Observations of De- 
flection. By Cart Friepricu GAuss ............. 
PART X. 
Art. VII.—General Propositions relating to Attractive and Re- 
pulsive Forces acting in the Inverse Ratio of the Square 
Meme wstinee. By CP E)-GADS 5. 26... cs le eee 
Arr. VIII.—On the Law of Storms. By Professor H. W. Dove 
ee... s Sane beter oeel ; 
Arr. IX.—On the Non-periodic Variations in the Distribution 
of Temperature on the Surface of the Earth, between the 
years 1782 and 1839. By Professor H. W. Dove of Berlin 
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