From east to west the chain of the Pyrenees has a length of four hundred and fifty kilometres, or, following the détours of the crests of the Hispano-Français frontier, perhaps six hundred. Between Pau and Huesca their width, counting from one lowland plain to another, is a trifle over a hundred and twenty kilometres, the slope being the most rapid on the northern, or French, side. The Pyrenees are less thickly wooded than the Savoian Alps, and there is very much less perpetual snow and fewer glaciers. In reality they are broken into two distinct parts by the Val d'Aran, forming the Pyrénées-Orientales and the Pyrénées-Occidentales. Of the detached mountain masses, the chief is the Canigou, lying almost by the Mediterranean shore, and a little northward of the main chain. Its highest peak is the Puigmal (_puig_ or _puy_ being the Languedoçian word for peak), rising to nearly three thousand metres. For long the Canigou was supposed to be the loftiest peak of the Pyrenees, but the Pic du Midi exceeds it by a hundred metres. However, this well proportioned, isolated mass looks more pretentious than it really is, standing, as it does, quite away from the main chain. From its peak Marseilles can be seen--by a Marseillais, who will also fancy that he can hear the turmoil of the Cannebière and detect the odour of the saffron in his beloved _bouillabaise_. At any rate one can certainly see as much of the earth's surface spread out before him here as from any other spot of which he has recollection. [Illustration: _The Peaks of the Pyrenees_] The Pyrénées-Occidentales abound in more numerous and better defined mountains than the more easterly portion. Here are the famous Monts Maudits, with the Pic de Nethou, the highest of the Pyrenees (three thousand four hundred and four metres), with a summit plateau or belvedere perhaps twenty metres in length by five in width. The Vignemal (three thousand two hundred and ninety-eight metres) is the highest peak wholly on French soil and dominates the famous _col_, or pass, known as the Brèche de Roland. The Pic du Midi, back of Bigorre, is justly the best known of all the crests of the Pyrenees. Its height is two thousand eight hundred and seventy-seven metres, and it is worthy of a special study, and a book all to itself. The observatory recently established here is one of the _chefs-d'oeuvre_ of science. The astronomical, climatological and geographical importance of this prominent peak was already marked out on the maps of the sixteenth and seventeenth centuries, and its glory has been often sung in verse by Guillaume Saluste, Sire du Bartas, gentilhomme Gascon; and by Bernard Palissy, better known as a potter than as a poet. [Illustration: _Brèche de Roland_]