VOL. XXV.] PHILOSOPHICAL TRANSACTIONS. 347 



from any thing else to influence it. This light is pretty strong, and extends 

 itself so far on the globe as the effluvia could reach. It is not so much of a 

 purple colour, as when it is caused by the attrition of the hands ; but it will 

 continue, or live on the globe for half a minute or more, after the motion of 

 the rubbed glass has ceased: but if the fricated glass be kept in motion, and 

 the other at rest, the light instantly dies, yet recovers again on the first motion 

 given it. After this I took a long glass, which had lain by me exhausted of its 

 air for more than six months : this glass having been rubbed a little with my 

 hand, to expel the humidity on its outside, I held it over the unexhausted 

 glass in motion, which at the same time was rubbed by my hand ; and it was 

 very surprising to see what large flashes of light would be produced in the long 

 glass without touching the glass in motion, though itself was neither moved nor 

 excited by any immediate attrition. 



Tabula exhibens Coeli Tempe states^ et MutationeSy ter unoquoque die : item Plagam 

 Fentorum, et Nubium ; altitudinem Mercurii in BarojnetrOy et Spirituum in 

 Tkermometro ; et denique Pluviee quanlitatenif quce quibusdam Diebus, et uno- 

 quoque Mense, per Infundibulum 12 Pollices Latum, apud Upminster in Comi- 

 tatu Essexice decidebat Anno 1705. Per W, Derham, Rector em Upminsteren- 

 sem, et S. R. S. N** 309, p. 2378. 



This register of the weather it is of no use now to retain. 



An Account of Balls of Hair taken from the Uterus and Ovaria of several 

 Women\ by Mr. James Yonge, F. R. S. N° 309, P- 2387. 



In Nov. 1705, I was called to deliver a woman 30 years of age, who was 4 

 days in labour of her first child: the head, being too large for the passage, 

 stuck immoveable at the os pubis ; so that I could neither fasten a crotchet, 

 nor draw it out by a cupping-glass fixed to the scalp with an air pump. In this 

 extremity I directed my son to open the child's head, and take out all the brains, 

 with so much of the skull as he could; and then by a cord fastened round the 

 neck with a noose, to draw it out, which was soon and easily done. 



The child was corrupted and stunk much, as also the lochia, which flowed 

 for 3 weeks ; soon after they ceased, the menstrua appeared, and the woman 

 went abroad: about 6 weeks after her delivery, she was seized with violent con- 

 vulsions, and hysteric fits; which lasted near three days; when a painful tumor 

 arose on the left side of her belly, which ended in an eruption of near a pint 

 of white thick matter, with small knobs of a substance like the yolk of boiled 

 eggs. All symptoms immediately vanished, only she complained of the great 

 hollowness where the tumor had been. Four days after this, the like swelling 



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