Mr, R. Spruce on the Musci and Hepatice of the Pyrenees. 83 
those of Mugriet (Commune of Souprosse) a few miles distant 
from St. Sever, and on the opposite side of the Adour. Return- 
ing thence to Pau, I again started on the 25th for Laruns, a 
little town lying about 26 miles to the southward, near the up- 
per extremity of the Vallée 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 Montagne 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 Béost and the hameau of Bagés (celebrated as the re- 
sidence of Gaston-Sacaze, the shepherd-botanist). Descending 
the Vallée d’Ossau and again taking Pau in my way, I proceeded 
on the 8th of July to Argélez, in the Dept. of the Hautes Pyré- 
nées. ‘The following day was given to the herborization of Pierre- 
fitte, on the south side of the valley (or rather plain) of Argélez, 
and at the confluence of the gorges of Luz and Cauterets. On 
the 11th 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 Jéret along the banks of 
the Gave de Marcadaou ; to the valleys of Lutour and Combascou, 
and to Mont Lizé. 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- 
eupied four days, numerous interesting flowers, but scarcely any 
mosses, were added to my collection. Returning to Cauterets, 
and descending from thence to Argélez, on the 8th I again 
ascended to Luz, at the entrance of the valley of Baréges. From 
Luz I visited the celebrated Chaos and Cirque de Gavarnie, the 
Vallée d’Estaubé, &c., but my bryological collections were not 
much swelled thereby. On the 20th I crossed the Tourmalet to 
Bagnéres-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 Vallée d’Aure and the 
Port de Peyresourde, to Bagnéres-de-Luchon, in the Dept. of the 
Haute Garonne. During my stay here of five weeks, I explored 
the whole of the magnificent Vallée du Lys (lateral to the valle 
of Luchon) with its four lakes and twenty-four cascades, and 
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 Ist and 2nd of October. Before this time I had visited the 
6* 
