vary in size according to rank.
For clerics the tonsure should be I inch in diameter. (Gastaldus, ii. sect. i. chap. viii.) For those in minor orders it should be 1 1/2 inch, (Council of Palencia under Urban VI.) For a sub-deacon 1 3/4 inch. (Gastaldus, xi. sect. i. chap. viii.)
For a deacon 2 inches. (Gastaldus, xi. sect. i. chap. ix.)
For a priest 2 1/2 inches. (Council of Palencia.)
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
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