VOL. XLIX.] PHILOSOPHICAL TRANSACTIONS. . 62Q 



lour ; some parts, when scraped, are white, and all the impression is of a yellow- 

 ish brown, nearly the colour of brown ochre. The impressions of the bones 

 and iins are verj' perfect; and the cavity, that contained the back-bone, ex- 

 tremely sharp and delicate. When Mr. P. first saw it, '2 or 3 of the vertebrae 

 were in it. All the cavities of the bones are now sufficiently open to contain 

 them, and it is probable that most, if not all of them, were in the stone, when 

 it was first split. Between the rib-bones and the two long fins, which come 

 down from the head, which parts were only fleshy, there is no impression, the 

 stone having united quite through ; and on the upper part of the fin, by the 

 side of the cheek, is a deep impression of a very small cockle-shell. The im- 

 pression on the counter-part of the stone is much the same, except that the 

 tail is wanting. 



L. On the Ejects of Lightning in the Danish Church, in JVellclose-square. By 

 Gustavus Brander, Esq., F. R. S. p. 298. 



On Monday, Nov. 17, between 6 and 7 o'clock, there was, among many 

 others, one most amazing flash, accompanied with a clap of thunder, that 

 equalled in report the largest cannon. The next morning, the minister observ- 

 ing the church clock to be silent, they went into the belfry, and found the wire 

 and chain, that communicated from the clock in the belfry, to the clapper 

 in the turret, where the bells hang, were melted ; and that the small bar of iron 

 from the clock, that gives motion to the chain and wire, just where the chain 

 was fastened, was melted half through, the bar being about -f- of an inch broad, 

 and half an inch thick. By several links of the chain, and of the wire, it is ob- 

 served, that the lightning took effect only in the joints. But whether it entered 

 by communication, from the wire exposed to the air in the small turret, through 

 the roof of the belfry, or at the windows, there being several panes broken in the 

 south and west corners, is uncertain ; though Mr. B. presumes rather the first 

 way, as it is very possible, that the bare report of the thunder might have oc- 

 casioned the latter. 



The pieces of the wire and chain were scattered over the whole belfry, nor 

 could it be discerned, that the wood-work, or ought else, had suffered. 



LI. Electrical Experiments, made in Pursuance of those hy Mr. Canton, dated 

 Dec. 3, 1753; with Explanations. By Mr. Benjamin Franklin, F.R.S. 

 Dated Philadelphia, March \ A, 1755. p. 300. 



Principles. — 1. Electric atmospheres, that flow round non-electric bodies, 

 being brought near each other, do not readily mix and unite into one atmosphere. 



