What is Block Of Surveys?

Legal Definition
In Pennsylvania land law. Any considerable body of contiguous tracts surveyed in the name of the same warrantee, without regard to the manner in which they were originally located; a body of contiguous tracts located by exterior lines, but not separated from each other by interior lines. Morrison v. Seaman, 183 Pa. 74, 38 Ati. 710; Ferguson v. Bloom, 144 Pa. 549, 23 Atl. 49.
-- Black's Law Dictionary