lo/.XV/ti. 



Philos. Trans. 



fty/a. 



//////, >/u// , /'"/■/ ','///'//• /oSsr/r/zn//.* . /s/.4^7 > >' 



■ 



i'ut'U.'hrd by C fr ELBaLiwin of 'S'fw'Brittyf AreftZeiuien iSoa . 



