Simon’s Reviews > Last Men in London > Status Update

for the most part less interesting than "Last and First Men" since so much of it's given over to the not-very-exciting private life of a WW1-era ambulance chauffeur after the war ends, but it has an interesting digression of a civilisation of intelligent lemurs who developed a complex religion (and another about a hyperintelligent but physically weak mutant human subspecies) that's classic Stapledon worldbuilding