442 PHILOSOPHICAL TRANSACTIONS. [aNNO IJSI. 



The day before the flower dropped from the ovarium, the place where it was 

 to separate was marked by a blackish circle, at which the tube separated spon- 

 taneously from the ovarium or matrix, that is, the rudiments of the fruit; the 

 pistillum still firmly adhering to the ovarium. The flower, now fallen, being 

 dissected longitudinally, the origin of the stamina lay open to the eye; and it 

 very manifestly appeared that the petaloid segments of the flower, far from af- 

 fording the least mark of a natural partition, stuck so very close to the tube, 

 that not one of them would quit it without tearing it off by violence. 



The fruit, though it came not to its full growth, plainly evinced, by inspec- 

 tion alone, that it is not prickly. On dissection it yielded a viscous juice, and 

 within there was a certain cavity, the sides of which were every where, except 

 at the bottom, thick set with an innumerable quantity of small villi, to each 

 one of which hung an oblong, white, pellucid vesicle, which is the rudiment 

 of the future seed. 



END OF VOLUME THIRTY-SIXTH OF THE ORIGINAL. 



A Catalogue of the Jifty Plants from Chelsea-Garden, presented to the Royal 

 Society, by the Company of Apothecaries, for the Year 1729; pursuant to the 

 Direction of Sir Hans Sloane, Bart. By Mr. Isaac Rand, Apothecary, 

 F. R.S. N° 4 1 7, p. 1 . Fol. XXXVn. 



A Description of the Water JForks at London Bridge. By Mr. Henry Beigh- 

 ton.* N°417, p. 5. 



The wheels are placed under the arches of London bridge; and moved by 

 the common stream of the tide water of the river Thames. 



AB, fig. 2, pi. 7, represents the axle-tree of the water wheel, I9 feet long, 

 and 3 feet in diameter; c, d, e, f, are 4 sets of arms, 8 in each place, on 

 which are fixed gggg, 4 rings, or sets of felloes, 20 feet in diameter, and the 

 floats HHH, 14 feet long, and 18 inches deep, being about 26 in number. 



* Of Mr. Beighton, though a respectable member of the Royal Society, we find no accounts re- 

 lating to his life, &c. We only know, from some circumstances, that he was eminently skilled in 

 machinery, and that he followed the profession of a civil engineer, being indeed the most eminent 

 of his time He was the intimate friend of Dr. Desagidiers, who received from him many valuable 

 communications in mechanics, engines, &c. some of whicii may be seen in various parts of the 2d 

 vol. of the Doctor's Course of Experimental Philosophy, particularly at pp. 431, 437, 449, 46"l, 472, 

 497, 534, 539, &c. 



It is probable that Mr. Beighton died in 1743 or 1744, as it appears he conducted the Ladies' 

 Diary for the Stationers' Company, from 1714 to 1744 inclu.sively ; discharging tliat trust with such 

 satisfaction to the company, that they permitted his widow to enjoy it for many years afterward, by 

 employing a deputy to compile that very useful annual little book. In this almanac, for the year 

 1721, Mr. Beighton inserted a curious table of calculations on the steam engine. 



