Deepfissuresaremade，probablybytheelevationoftheland，proofsofwhichareseeninmodernshellsimbeddedinmarlytufaallroundthecoast-lineWhetherthisprocessofdesiccationisasrapidthroughoutthecontinentas，inalettertothelateDeanBuckland，in1843，IshowedtohavebeenthecaseintheBechuanacountry，itisnotformetosay；but，thoughthereisaslighttraditionofthewatershavingburstthroughthelowhillssouthoftheBarotse，thereisnoneofasuddenupheavalaccompaniedbyanearthquake。
TheformationofthecrackofMosioatunyaisperhapstooancientforthat；
yet，althoughinformationofanyremarkableeventisoftentransmittedinthenativenames，andtheyevenretainatraditionwhichlookslikethestoryofSolomonandtheharlots，thereisnotanamelikeTomEarthquakeorSamShake-the-groundinthewholecountry。
TheyhaveatraditionwhichmayrefertothebuildingoftheTowerofBabel，butitendsintheboldbuildersgettingtheircrownscrackedbythefallofthescaffolding；andthattheycameoutofacavecalled“Loey“Noe？incompanywiththebeasts，andallpointtoitinonedirection，viz。，theN。N。ELoey，too，isanexceptioninthelanguage，astheyusemasculineinsteadofneuterpronounstoit。
Ifwetakeaglancebackatthegreatvalley，theformtherivershavetakenimpartstheideaofalakeslowlydrainedout，fortheyhavecutoutforthemselvesbedsexactlylikewhatwemayseeinthesoftmudofashallowpoolofrain-water，whenthatisletoffbyafurrow。