Of humour there are hardly any signs in his Book. His almost solitary joke (I know but one more, and it pertains to the οὐκ ἀνήκοντα) occurs in speaking of the Kaan’s paper-money when he observes that Kúblái might be said to have the true Philosopher’s Stone, for he made his money at pleasure out of the bark of Trees.[6] Even the oddest eccentricities of outlandish tribes scarcely seem to disturb his gravity; as when he relates in his brief way of the people called Gold-Teeth on the frontier of Burma, that ludicrous custom which Mr. Tylor has so well illustrated under the name of the _Couvade_. There is more savour of laughter in the few lines of a Greek Epic, which relate precisely the same custom of a people on the Euxine:— ————“In the Tibarenian Land When some good woman bears her lord a babe, ’Tis _he_ is swathed and groaning put to bed; Whilst _she_, arising, tends his baths, and serves Nice possets for her husband in the straw.”[7] [Illustration: Probable View OF MARCO POLO’S OWN GEOGRAPHY Lit. Frauenfelder, Palermo] [Sidenote: Absence of scientific notions.] 69. Of scientific notions, such as we find in the unveracious Maundevile, we have no trace in truthful Marco. The former, “lying with a circumstance,” tells us boldly that he was in 33° of South Latitude; the latter is full of wonder that some of the Indian Islands where he had been lay so far to the south that you lost sight of the Pole-star. When it rises again on his horizon he estimates the Latitude by the Pole-star’s being so many _cubits_ high. So the gallant Baber speaks of the sun having mounted _spear-high_ when the onset of battle began at Paniput. Such expressions convey no notion at all to such as have had their ideas sophisticated by angular perceptions of altitude, but similar expressions are common among Orientals,[8] and indeed I have heard them from educated Englishmen. In another place Marco states regarding certain islands in the Northern Ocean that they lie so very far to the north that in going thither one actually leaves the Pole-star a trifle behind towards the south; a statement to which we know only one parallel, to wit, in the voyage of that adventurous Dutch skipper who told Master Moxon, King Charles II.’s Hydrographer, that he had sailed two degrees beyond the Pole! [Sidenote: Map constructed on Polo’s data.] 70. The Book, however, is full of bearings and distances, and I have thought it worth while to construct a map from its indications, in order to get some approximation to Polo’s own idea of the face of that world which he had traversed so extensively. There are three allusions to maps in the course of his work (II. 245, 312, 424).