482 PHILOSOPHICAL TRANSACTIONS. [aNNO 1 709- 



particle, ps it appeared through a microscope, of which fg shows the undermost 

 part, being as it were the socket of the pointed parts ih. 



I was desirous to search into the inward parts of the^nostrils of an ox, as well 

 as I was able ; in doing which, 1 saw that each side of the nnouth, which one 

 might call the lips, was furnished with a great many pointed parts, that were 

 very thick in the inner skin, and being round ran into a very slender point. I 

 likewise observed the skin of several of the said parts, which were very strongly 

 united to the parts that lay in it ; and found that one of those parts that lay 

 within, consisted of a great many pointed particles, which were much thicker 

 and longer than those I had discovered in the inward parts of the tongue. I 

 caused a very small particle of the foresaid parts to be drawn, as it appeared to 

 the naked eye, as shown in fig. 29 ; only with this difference, that this is not 

 so thick and large as it should be, because the parts were dried and shrunk in, 

 and they were also of the smallest size of any that I had dissected. 



An Experiment of the Freezing of Common Water, and Water freed of Air, 

 By Mr. Fr. Hauksbee, F. R. S. N° 320, p. 302. 



This experiment was recommended to me, in order to discover what differ- 

 ence would happen in the swelling or bulk of ice, producible on the freezing of 

 common water, and water cleared of air. Accordingly I procured a couple of 

 glasses, in form of fig. 1, pi. 12; which when filled with the different waters 

 to a determinate height, supposing at aa, I conveyed into the freezing mix- 

 ture, being only a composition of snow and bay-salt powdered pretty fine ; 

 where having remained 3 or 4 minutes, the congelation began in each of them, 

 which was very discernible, by the ascent of the water in the tubes, above their 

 first heights aa ; and in about an hour's time, it had ascended in that glass, 

 which contained the water freed of air, at least () inches ; but in the other glass 

 with common water, not quite 5 inches ; there being such a disparity in the 

 contents of the two glasses, the last mentioned being less by a 5th part than 

 the other, which contained not full 4 ounces. It was observable, that during 

 their continuance in the frigorific mixture, small bubbles of air continually 

 ascended in that which was filled with common water, but not the least sign of 

 any such appearance in the other. After this, taking the glasses out of the 

 mixture, I poured from them the unfrozen water, which gave me the oppor- 

 tunity of discovering the various forms the newly made ice had shot itself into : 

 that glass which contained the purged water, appearing all over the sides and 

 upper part of it, to the very neck bb, of divers figures, much resembling those 

 of salts : the bottom part of it cc, seemed to be solid, but whitish, as if full of 



