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CANAL. A trench dug for leading water in a particular direction, and confining it.
     2. Public canals are generally protected by the law which authorizes their being made. Various points have arisen under numerous laws authorizing the construction of canals, which have been decided in cases reported in 1 Yeates, 430; 1 Binn. 70; 1 Pennsyl. 462; 2 Pennsyl. 517; 7 Mass. 169; 1 Sumu. 46; 20 Johns. 103, 735; 2 Johns. 283; 7 John. Ch. 315; 1 Wend. 474; 5 Wend. 166; 8 Wend. 469; 4 Wend. 667; 6 Cowen, 698; 7 Cowen, 526 4 Hamm. 253; 5 Hamm. 141, 391; 6 Hamm. 126; 1 N. H. Rep. 339; See River.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
MD: mandibular canal, PR: preopercular canal, PRMD: preoperculo mandibular canal, IO: infraocular canal, SO: supraorbital canal, OT: otic canal, PO: post-otic canal, ST: supratemporal canal, T: temporal canal, SOS: suborbital stay, op: operculum, LL: lateral line, b) dorsal view.
The supraorbital canal is an extension of a nerve branch arising from between the frontals at the posterior rim of the dorsal orbit.
(1989: 257), such that the supraorbital pores are expressed as the ethmoidal pore + pores in supraorbital canal, i.e., 1 + 3, and the infraorbital pores are expressed as pores along the upper jaw + those in vertical part of canal behind eye (the "postorbital pores"), i.e., 4 + 2, in that frequently the last pore included along the upper jaw is part of the postorbital series.