ABSTRACT
THEmatterofthi~Book,andofBookIVwhichfollows,is inlargemeasureTantric,particularlythatpartofitconcernedwithvisualizationsandmeditations.Andinthisconnexionitisofimportanceforthestudentofhistoryandof religiousoriginstoknowthattheLamasrecognizefourchief classesofyogicTatztras,whichmaybebrieflydescribedas follows:(1)TantrasexpositoryoftheThatness,orUltimateTruth,and(2)oftheOccult,orMystic,Sciences; (3)theYogini,orShakti,Tantras;and(4)theKiilachakra Tatztras.
