Garrow or Garo Hills, an elevated district of British India, situated in the bend of the Brahmapootra, where that river turns from its westerly course southward, between lat. 25° and 26'o N., and Ion. 90° and 91° E.; area, 3,390 sq. m.; pop. 50,000. The district is a square tract of hills, plateaus, and mountains, rising from the adjacent lowlands to heights of from 3,000 to 4,000 ft. The prevailing geological formation is red and white granite, overlaid with clay and sand of like colors. It is separated from the Cossya or Khosia hills on the east by a band of wood and jungle, 18 m. wide, running along the 91st parallel. The Garrow hills form a spur of the Burmese mountains overhanging the valley of the Brahmapootra, but reaching the river itself. The country is finely wooded, well watered, and exceedingly fertile, principally yielding cotton. The climate is extremely unhealthy. In respect to its rainfall the Garrow and Cossya region is one of the most remarkable localities on the globe, from 500 to 600 in. of rain having been known to fall on the S. slope of the mountains in one year. The name of the district is derived from the appellation of its inhabitants, concerning whom very little is known.

They have maintained a singular isolation during the whole period of British supremacy in India, and no effectual jurisdiction was exercised over their territory till 1865, nor has their country ever yet been thoroughly explored. They are an active, dark-skinned race, usually classed with the aboriginal sub-Himalayan tribes; eth-nologically they are believed to be closely related to the Gonds of central India. They are addicted to hereditary blood feuds. The district is now under the supervision of the Bengal government, being included politically in the non-regulation division of Assam. American missionaries maintain eight schools in it.