This county is maritime, and of great extent, being the second in the island. It contains several lakes; but as the scenery round these is not very romantic, they are but little known to the tourist; and the aspect is not improved by the dry stone walls or hedges; except in the western district, where the beautiful shores of Lough Corrib will repay the trouble of a visit, through an extensive tract of irreclaimable bog and mountain. On the sea coast it is picturesquely broken by numerous arms of the sea; and its rivers deserve the notice of the inquisitive tourist. Dr. Beaufort observes, that several of these rivers are subterraneous in part of their course: near the village of Shrull, on the borders of Mayo, the Black river runs under ground for about 3 miles; but the most remarkable fact is that of the Moyne and the Clare, which unite their streams under ground, alternately appearing and retiring from view at the Turlachmore, which in winter forms a lake and in summer a beautiful and sound sheepwalk, upwards of 6 m. in length and 2 in breadth. Bounded W. by the Atlantic; N. by Mayo; N.E. by Roscommon; E. by King's County, Tipperary, and the Shannon; S. by Clare, and Galway bay. AGHRIM, 24 m. E. of Galway, is a small village; but noticeable as the scene of battle between Ginkle and St. Ruth in the war of the Revolution, 12th July, 1691, when the latter, with his French and Irish army, was completely defeated. The scene of action was on Kilcomodon Hill. See the beautiful demesne of Ballydonnellan, also Ballydugan; ruins of old Castles; and the magnificent demesne of Wood Lawn. But this place and its surrounding scenery may be visited from Loughrea. ATHENRY, 10 m. N.E. of Galway, now in decay; once a strong English fortification; its walls built in 1211. See Dominican monastery, noble even in its ruins. The tower and several of the gable windows are very fine; but its appearance is much altered by a part having been fitted up for the reception of the garrison, the cloisters forming the modern barrack-yard. Ancient Castle of the Lords Birmingham, in ruins; with lofty tower and ivy-mantled walls, affording a good idea of the feudal manners on the borders of the Pale. At Knockmoy, 7 m. N., see ruins of a monastery, with an ancient tomb of the O'Connors adorned with sepulchral mementos in fresco painting. BALLINASLOE, 30 m. E. of Galway, is on the very verge of the county, and interesting to the statistical tourist from its autumnal fair for cattle, under the immediate patronage of the Farming Society. (_See further Mr. Curwen's Letters_, vol. ii. p. 229.)