Theseasonofthesechanges，whichisthemostfavorableforEuropeans，isthemostunhealthyforthenativepopulation；andthisisbynomeansaclimateinwhicheithernativesorEuropeanscanindulgeinirregularitieswithimpunity。
Owingtotheweaknessofthemenwhohadbeensick，wewereabletomarchbutshortdistancesThreehoursandahalfbroughtustothebanksoftheCaloi，asmallstreamwhichflowsintotheSenza。
Thisisoneofthepartsofthecountryreputedtoyieldpetroleum，butthegeologicalformation，beingmicaschist，dippingtowardtheeastward，didnotpromisemuchforourfindingitOurhospitablefriend，MrMellot，accompaniedustoanotherlittleriver，calledtheQuango，whereIsawtwofineboys，thesonsofthesub-commandant，MrFeltao，who，thoughonlyfromsixtoeightyearsold，weresubjecttofever。
Wethenpassedoninthebrightsunlight，thewholecountrylookingsofreshandgreenaftertherains，andeverythingsocheering，onecouldnotbutwondertofinditsofeverish。
Wefound，onreachingAmbaca，thatthegallantoldsoldier，LaurenceJoseMarquis，had，sinceourpassingIcolloiBengo，beenpromoted，onaccountofhissternintegrity，tothegovernmentofthisimportantdistrictTheofficeofcommandantismuchcovetedbytheofficersofthelinewhocometoAngola，notsomuchforthesalaryasfortheperquisites，which，whenmanagedskillfully，inthecourseofafewyearsmakeonerichAnideamaybeformedoftheconductofsomeoftheseofficialsfromthefollowingextractfromtheBoletinofLoandaofthe28thofOctober，1854：