The Rev. W. H. Wilson, who fjr a con ider abls time was residing afc Samop, where for a peiiod ho noc only was eugag<.d in mis iona>y work but aleo for a time officiated as HB. M&j»s:y's Consul in whicli latter capacity, more especially during tho hottest portion of the fighting, he was enabled to form a very just and accurate opinion as to t' a c~use which lei to the presi nt embar r scd s ate of affairs delivered a lecture on the abov;' Rihject laßt night. The attendance in the Provincial Hali h-sb evoning, on the occaion of the lecture, though large,_was by no means commensurate ci'h p r wiih the talents of the rev. lecturer, or the deep in fceretst whioh Samoan affairs have awakened i in tt.e minds of tho E.-gliah-s-jeaking races throughout the world. T::e Boy Mr Wilsor jb a fluent and rapid sot-ak-.r but, his enunciation is so distinct, the mit rial he had afc his command was so good, tig. ther wi h his diolamatoiy powers, whi*.*.h made his delivery at timts almost, dramatic— so im ' paafisioned were his words and gestates— taat his rapid speech rather tdded to, than de tracted from the iuierest S tLc as dues. The eh-ir w s tak, n by Colonel Pitt, who britfly introduced i-o r.v 1-j-turur lO his f-udie-.c*. Duriug ! hj cvOf-iug, more ts r ecialy when i.ia denuneia.io.-a of the Geruid;i Guvai.in>-ui ;7r a.c.r " treachery " to King ilulio oa iv d^i.r^.iitig him w* re u.Lre~, .Lc ou imco rust hear. ily t,tßtifl..d to f'-eii bjinprvhy with il.u d-y^EeJi King and his* i eta cuU'J tiu.joo a. Mr W.leon uoii.menoc.d i.y givii.g a brief geographical rk.itxh of tbo it-iani of ihe .'-.sunoan or Naviga or Group, wbioh he re marked weuld become of very groht import asree to fcLie Austraksiau Colo-iks e-ouid iho op niijg of tho P)La.i.-a eaual lVv,i* become Ga accjin'iliijhj.l fact. Th* to"al a*ea of t'.ie islands i= esfcim>fc<.d *-.! 1(350 tqu re mil^. June of ;he islands mv im- biu:d, ar.d 11 of li'eci arc of volcaiUt* crigii*. The na.ivu population bed by Beveral peie.j s lieen ebt : o mated at 50,000 soule, but L r. marked tha'. thu eslimaso of tho mijiio-jailts bi.d nevt-r been moro th&u 34,000 persons. The lecturer went on to speak of th. 