1879.] Mr Fisher, On implement-bearing loams in Suffolk. 289 



beds on the Pacific coast containing human remains and the works 

 of man which are at least as old as the pliocene of Europe *. 



These implement-bearing loams or "Brandon beds" seem to 

 have had a rather wide extension, and I think it is open to ques- 

 tion w"h ether the brickearth of Hoxne may not belong to them. 

 Their character suggests that they may have been deposited by a 

 river whfen overflowing its course during states of flood, and the 

 mode in which the flakes and implements occur sporadically scat- 

 tered in them looks as if they had been dropped by the people 

 when the waters were off. 



Although the implements are of such an early age, yet their 

 character is decidedly light and refined in workmanship, more so 

 I think than those of the next succeeding age, which are found in 

 the drifted gravels of the high grounds which rest on boulder clay 

 or chalk. 



There are hereabouts altogether three deposits containing worked 

 flints. (1) The oldest, the loamy brickearths (interglacial) ; (2) the 

 next in age, the old high level gravels consisting of rolled pebbles of 

 sandstone and the crystalline rocks along with an abundance of hard 

 chalk pebbles and flints. This occurs on the highest grounds as 

 remnants of a well-defined ridge running across the course of the 

 valleys of the Lark and Ouse in a nearly North and South direction. 

 I saw from beneath it, where it was stated to lie upon chalk, two 

 large molars of Elephas primigenius and a tooth of Hippopotamus 

 and another of a large i?os. These were in the possession of Mr 

 Fenton of Mildenhall. (3) The newest deposit that contains palae- 

 olithic flints is the gravel bordering the present river courses. 

 Neolithic implements of various types, and many of them perfectly 

 elegant in form and workmanship, are scattered over the neio-h- 

 bourhood; whilst the paths and walls contain the refuse of the 

 modern flint knapper's shop. 



(2) Mr A. G. Greenhill, M.A., On Greens function for a 

 rectangular parallelepiped. 



Green's function is the algebraical sum of the reciprocal of 

 the distances from the influencing point in the interior of the 

 parallelepiped, and from the optical images of the influencino- 

 point in the faces of the parallelepiped, an image and the corre- 

 sponding reciprocal of the distance being taken as positive or 

 negative according as the image has been formed by an even or 

 odd number of reflexions at the faces. 



Take the origin at a corner of the parallelepiped, and the three 

 edges through the corner as co-ordinates of x, y, z\ let a, h, c 



* Prof. 0. C. Marsh, on "History and Msthods of PaliPDntological discovery," 

 Nature, Vol. xx. p. 521. 



