PBOCEEDINGS OF SOCIETIES. 4$ 



utero-gestation and its complement, tlie mammary glands, are incompatible 

 mth a flying animal. Even the Bat offers no objection to this view. Hence 

 as birds have no utero-gestation, so have they no diaphragm ; nor could they 

 be sucking animals, as they have neither fleshy lips nor tongues, nor even 

 an epiglottis. 



A vote of thanks was then tendered to Dr. Scouler, and business being 

 over, the meeting separated. 



Nov, 1th. The ordinary Monthly Meeting was held this evening, the Px'esi- 

 dent in the Chair. 



The Minutes of last meeting were read and approved of, and Messrs. 

 Thomas Reid and Gr. J. L^on were unanimously elected resident members. 



The President, having vacated the Chair, which was then tilled by Dr. 

 Arnott, read a Paper in continuation of his former ones, on the Geology of 

 Campsie District, entitled, " Some further Illustrations of the Geology of 

 Campsie." He commenced by recapitulating some of his former remarks ou 

 the topography and general physical features of that interesting district, 

 showing the prevailing characters of the strata, and giving an outline of the 

 principal beds Avith their included fossils, and a general desciiption of the 

 boulder drift, with several proofs of the prominent part it had played in the 

 conformation of that locality. He then opened his present Paper by relating 

 the ascending order of the strata, stating, that the lowest beds are the old 

 red sandstone rocks of Killearn, immediately above which lie the Ballaggan 

 beds, which in their turn, are covered by the strata seen at the Linn of Bal- 

 dernock, the lowest in which fossils are there found, consisting chiefly of 

 Cyprides, &c., and the remains of fishes. The next in ascending order are the 

 Craigenglen beds, where we have both marine and fresh water fossils ; the 

 next are those at Milburn, which are marine beds only ; atop of these lie 

 the strata of the Schiliengow Quarries and the Glorat Lime Works, which 

 beds are both marine and fresh water ; the strata of the Corrie-burn are the 

 next highest, and they are all marine ; and the highest we have in that dis- 

 trict, are found at Samson's pit, being both lacustrine and marine. 



He then described that fine section exhibited at the spout of Ballaggan, 

 which, he said, is composed of a series of thin beds of impure limestones, 

 sandstones, and shales. These strata are upwards of one thousand feet in 

 thickness, and are seen resting on the old red sandstone, in some of the glens 

 near Leven. The number of beds which constitute this section are about 

 two hundred and fifty. These beds form the base of the north hill towards 

 the west, and are covei^ed by tabular masses of trap ; the strata do not rise 

 against the trap, but they dip slightly into the hill near it ; from which fact 

 we were led to the conclusion, that the vein through which the trap had been 

 ejected, must have its position at some distance, and the liquid mass must 

 have overflowed the strata without disturbing them much. The Ballaggan 

 beds were long thought to contain no fossils ; but Mr. Young had discovered, 



