Mr. R. Spruce on the Mtisci and Hepatictp of the Pyrenees. 83 



those of Mugriet (Commune of Souprosse) a few miles distant 

 from St. Sever, and on the opposite side ofthe Adour. Return- 

 ing thence to Pau, I again started on the 35th for Laruns, a 

 little town lying about 26 miles to the southward, near the up- 

 per extremity of the Vallee d'Ossau, and midway between the 

 Eaux Bonnes and the Eaux Chaudes. Here commenced my ac- 

 quaintance with the real Pyrenees. My excursions included the 

 Pic de Ger and the Montague Verte, the former overlooking the 

 Eaux Bonnes from the south and the latter from the north ; the 

 Gorge de Hourat, conducting to the Eaux Chaudes, and watered 

 by the Gave de Gabas ; the Gave de Valentin, which uniting at 

 Laruns with the Gave de Gabas, forms the Gave d'Ossau ; the 

 village of Beost and the hameau of Bages (celebrated as the re- 

 sidence of Gaston-Sacaze, the shepherd-botanist). Descending 

 the Vallee d'Ossau and again taking Pau in my way, I proceeded 

 on the 8th of July to Argelez, in the Dept. of the Hautes Pyre- 

 nees. The following day was given to the herborization of Pierre- 

 fitte^ on the south side of the valley (or rather plain) of Argelez, 

 and at the confluence of the gorges of Luz and Cauterets. On 

 the lltli I ascended to Cauterets, where I remained until the end 

 of the month. My excursions from it were to the Pont d'Espagne 

 and Lac de Gaube, ascending the Val de Jeret along the banks of 

 the Gave de Marcadaou ; to the valleys of Lutour and Combascou, 

 and to Mont Lize. On the 2nd of August, accompanied by 

 Dr. Southby, a compatriot enthusiastic in the pursuit of natural 

 history, I crossed the central chain by the Port de Cauterets to 

 the baths of Penticosa in Aragon. In this excursion, which oc- 

 cupied four days, numerous interesting flowers, but scarcely any 

 mosses, were added to my collection. Returning to Cauterets, 

 and descending from thence to Argelez, on the 8th I again 

 ascended to Luz, at the entrance of the valley of Bareges. From 

 Luz I visited the celebrated Chaos and Cirque de Gavarnie, the 

 Vallee d'Estaube, &c., but my bryological collections were not 

 much swelled thereby. On the 20tli I crossed the Tourmalet to 

 Bagneres-de-Bigorre, in the valley of the Adour. My stay was 

 but short, for the present, and my only excursion of importance 

 was to the flowery Mont Lhieris. The 27th and 28th of the 

 same month were taken up in walking through the mountains, 

 by way of the Hourquette d'Aspin, the Vallee d'Aui'e and the 

 Port de Peyresourde, to Bagneres-de-Luchon, in the Dept. of the 

 Haute Garonne. During my stay here of five weeks, I explored 

 the whole of the magnificent Vallee du Lys (lateral to the valley 

 of Luchon) with its four lakes and twenty-four cascades, and I 

 ascended the lofty mountain of Crabioules (mountain of crabes 

 or izards) which bounds it on the west, as far as the snow-line on 

 the 1st and 2nd of October. Before this time I had visited the 



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