VOL. XXXIX.] PHILOSOPHICAL TRANSACTIONS. 65 



family to another, but neither of them of any note, seeming by their agnomina 

 to have been only liberti, or descended from such. Agricola indeed is a 

 Roman name, but those of his wife Lacena, and his son Protus, are both 

 Greek. 



By this chirograph Herennius Agricola obtains from Titus Flavins Artemi- 

 dorus, a right to 4 ollaria, which were niches or repositories, where they placed 

 cineraria, urns, or vessels of stone or earth, containing the ashes of the dead, 

 and were here 53 in number. 



This monument was situated on the left side of the Via Salaria, which ran to 

 the north-west of Rome from the Porta Collina. It stood in the ground of 

 Volusius Basilides, and the consideration for the conveyance of it is one Sesterce. 

 It is very usual in sepulchral inscriptions to find the monument of one family in 

 the field of another, the prpprietor of the monument reserving the right of 

 that to himself when he sold the ground; or purchasing so much ground from 

 the owner as was suflicient for erecting the monument. All sepulchres, when 

 once a body was interred therein, were esteemed as religious and sacred, and 

 were not to follow the possession of the field. 



The stone is turned with an arch at top; the whole length of it is 17\ inches; 

 the breadth at the bottom is lOj^ inches, and at the base of the arch 12^, as it 

 widens gradually upwards. The letters are cut in a small indifl^erent character; 

 that of the E and the F are remarkable, being always formed in this manner 

 E,/. It was probably placed over or between the four niches, or ollaria, granted 

 to M. Herennius Agricola, in this monument, by T. Flavius Artemidorus, to de- 

 clare and assert the right and possession of them to the former, and his family, 

 till they were all filled. 



Of the Revolutions which small Pendulous Bodies, by Electricity, make round 

 larger ones from West to East, as the Planets do round the Sun. By Mr. 

 Stephen Gray. N° 441, p. 220. 



Mr. Gray made several new experiments on the projectile and pendulous mo- 

 tion of small bodies by electricity, by which they are made to move about 

 larger ones, either in circles or ellipses, and that either concentric or excentric 

 to the centre of the larger bodies about which they move, so as to make many 

 revolutions about them; and this motion constantly the same way that the 

 planets move about the sun, viz. from the right to the left, or from west to 

 east; but these little planets, if they may be so called, move much faster in 

 their apogeon than in the perigeon parts of their orbits: which is directly con- 

 trary to the motion of the planets about the sun. 



VOL. VIII. K 



