122 PHILOSOPHICAL TRANSACTIONS. [aNNO 1684-5. 



posing this bone had the same proportion to his stature, which in other men 

 it has to theirs, it must follow that he was more than twice as tall as men 

 usually are, that is, 11 or 12 feet high. It is true, that some heads are very 

 large in proportion to their body, yet generally such skulls want in thickness, 

 as this does not, and are ill shaped, and not proportionable. 



A Stone grown to an Iron Bodkin, in the Bladder of a Boy ; communicated 

 by Dr. Lister, F.R.S. N° l68, p. 882. 



Fig. 3, pi. 4, represents a stone, which was cut out of the bladder of a boy 

 at Paris, by M. Colo : the iron bodkin, to which the stone grew, and which 

 passes through the middle of it, had been thrust up into the bladder by the 

 boy himself, about two years before the incision. The stone was presented by 

 the above named surgeon to his late majesty of England, among whose rarities 

 it is now preserved, and by whose permission I caused this draught to be 

 made of it. 



Abstract of a Letter from Mr. Anthony Leewenhoech, on the Parts of the 

 Brain of several Animals ; also the Chalk Stones of the Gout ; the Leprosy ; and 

 the Scales of Eels. N" l68, p. 883. 



' The cortical parts of the brain of a turkey cock, consist (a great number of 

 blood vessels and small globules excepted) of a very clear crystalline oily matter, 

 which for its transparency ought rather to be named vitreous than cortical. 

 When I separated a little of this matter from the rest, there flowed from the 

 place a little thin moisture, containing in it some extremely small glo- 

 bules, less than -^ part of one of those which make the redness in the blood. 

 This fluid matter, however, was chiefly in the brain of such turkeys, as had 

 been dead for some time. Besides the abovementioned small globules, there 

 were also some about the size of -^ of a globule of our blood. Together 

 with the abovementioned globules, there were some transparent irregular ones, 

 as large or larger than a globule of our blood, which lay among the branches 

 of the blood vessels, in a space no larger than a coarse sand. Though these 

 blood vessels were so small, they had yet such a degree of colour, that I could 

 discern the matter in them to be that which makes the blood red. And I was 

 further confirmed in my judgment, by observing that other blood vessels, which 

 were somewhat thicker, appeared proportionably higher coloured, and more in- 

 clining to red ; and that the redness appeared more plain, when 3 or 4 vessels 

 lay immediately one over the other, without any other matter intervening. 



The cause of the brownish colour of the cortical parts, I take to be the 

 great number of yeins and arteries which run through the transparent sub- 



