I cker & Thorpe^. 
PhiZ.Trmis.W) i^^,A..PIjCuU IO, 
FbcdxjJC. HorvzarLtaL ForcesDte 
tuFbcvruyes ijru tezr.is of 0 0001 
vjnxt/S, &c Ujro&s of roo 
dbbstuT'bocruce'. Thjs. fig-wres 
are ijMjdjerJjuxedy wToeru th^ ixrrce 
us LSfSS duxruiXs caLcuLoijtedyvalMJZ>. 
L_ 
w 
West^NewmcUi litii 
