Proceedings of the Cambridge Philosophical Society. 343 



There was presented to the Museum of the Society, by George Swin- 

 ton, Esq. of Calcutta, the snout of the Saw Fish. This is one of the largest 

 and finest specimens that has been seen. 



The same gentleman also presented to the Society, the skeleton of a Boa 

 Constrictor, sixteen feet long, the mother of the young brood of Boa Con- 

 strictors described in this Journal, No. viii. p. 221, accompanied by one of 

 the brood preserved in spirits. Mr Swinton likewise presented various 

 snakes from Arracan and Sumatra. 



February 19. — There was read a Paper by John James Audubon, Esq. 

 entitled Notes on the Habits of the Wild Pigeon of America, Columba 

 migratoria. — This Paper is printed in the present Number, p. 257. 



There was presented by Sir Thomas Makdougall Brisbane, K. C.B. 

 to the Museum of the Society various interesting objects of Natural His- 

 tory from New South Wales, and various specimens of the Cloth, Ropes, 

 &c. &c. of the Natives. 



March 5 — There was read a Paper by Thomas Allan, Esq. entitled, 

 " Notice respecting the Tusk of a Mastodon, with some Bones and Fossils 

 found in tirring Woodhill Quarry, near Kilmarnock." 



Mr Allan presented this Tusk and the other Fossils to the Museum 

 of the Society. 



There was read at the same meeting, a Paper by Dr Brewster, en- 

 titled, " Report on the Hourly Meteorological Register kept at Leith 

 Fort during the year 1826/' 



The following Gentlemen were elected Members :— 

 Honorary. 

 Jacob Berzelius, M. D. F. R. S. Stockholm. 



Foreign. 



John James Audubon, Esq. M. W. S. &c« 



Ordinary. 



Dr James Russell. John Reddie, Esq. LL. D. 



Prideaux John Selby, Esq. Rev. Dr Robert Gordon. 



Henry Witham, Esq. James Wilson, Esq. 



2. Proceedings of the Cambridge Philosophical Society. 



November 13. — Professor Sedgwick exhibited to the Society a very 

 large pair of fossil horns, found near Walton, in Essex, and stated the 

 grounds on which it appeared that they had belonged to an animal of the 

 species Bos Taurus. 



Mr Whewell read to the Society a paper " on the classification of crys- 

 talline combinations, and the causes of deviation by which their laws may 

 be investigated." The object of this paper was to exhibit tables of the 

 forms of crystals, classed according to geometrical properties, which are 

 in most cases easily recognized by the eye ; and from this arrangement to 

 obtain, without calculation or knowledge of the angles, the relation between 

 the secondary faces which offer themselves, and the primary forms from 

 which they are derivable* 



November 27. — A memoir was read by Professor Airy " on the motion 

 of a pendulum disturbed by any small force, and on the application of this 



