Wepresentresultsofacomprehensiveinvestigationofthestructural,frequencydependentacsus-
ceptibility,dcmagnetization,magnetoresistanceandthermoelectricpowermeasurementsonpoly-
crystalline samplesofLa1xLixMnO3 (0.05rxr0.30). Allsamplesundergoferromagnetictopara-
magnetic transitionandmetaltosemiconductortransition.Acuspinthezero field-cooled indcmag-
netization andafrequency-dependentpeakintheacsusceptibilityrevealtheglassybehaviors.Theoutof
phase componentoftheacsusceptibilityshowsfrequency-dependentpeaksbelowtheCurietempera-
ture (indicativeofglassybehavior)whichhavepreviouslybeeninterpretedintermsoffreezingof
clusters. Thegrainboundariesplayadominantroleintheconductionprocess.Theframeworkofthe
magnon andphonondragconceptanalyzedthermoelectricpowerdataatlowtemperature,whilesmall
polaron conductionmechanismexplainedthermoelectricpowerdataathightemperature.Ithasbeen
found thatthepercolationthresholdsampleis x¼0.10,sotheauthor’s pointofviewreferstomakespot
on thissampleinthefutureworks.