Buckle，Isaid，sharedtheerroroftheUtilitarianswhoassumedmoralprogresstoconsist，notinachangedestimateofhappiness，butsimplyinabetterknowledgeofthemeansofattainingit。Buckle’sidentificationofprogresswithincreaseofknowledgeinvolved，Isaid，thesameerror。Thechangeisregardedassuperficialor’external’。Meanwhilemyargument，whichMrRobertsonattacks，aboutthefallacyofarguingfromthefixedenvironmenttothevaryingorganismappliedtosuchcasesastheinferencefromearthquakestosuperstitionorfromclimatetoaesthetictendencies。Suchageneralisation，takenasanexplanationofsuperstition，generallyimplies，asIheld，aninadequateappreciationofthesocialormoralevolution。PerhapsIdidnotputthepointclearlyoraccurately，and，ifso，I
regretit。
39。PhilosophiePositive，1852，i，44，andcp。Ibid。iv。648，etc。
40。MrHerbertSpencerraisesthisquestioninacriticismofComte，containedinapamphletuponthe’ClassificationoftheSciences。’SeeMill’sremarksuponthisinhisAugusteComteandPositivism，pp。34，43，102，114。ThecontroversybetweenMrSpencerandComteliesbeyondmyprovince。
41。Civilisation，p。152。