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Webster 1913 Edition

Noun.

[L.

agnatio

: cf. F.

agnation

(Civil Law)

Consanguinity by a line of males only, as distinguished from

cognation

Bouvier.

Noun.

Relation by the father's side only, or descent in the male line, distinct from cognation, which includes descent in the male and female lines.

agnation ‎(countable and uncountable, plural agnations)

consanguinity by a line of males only, as distinguished from cognation
(Can we find and add a quotation of Bouvier to this entry?)

consanguinity by a line of males