These canons have not, however, been rigidly adhered to in every case. In estimating the garrison of Mauretania Caesariensis; for example, where evidence is particularly scanty, it seemed foolish to exclude that afforded by the diploma of 107, the only one yet found in the province. In this and other doubtful cases a summary of the evidence used is appended to the name of the regiment, so that the reader may judge of its value for himself. When the facts seem certain the epigraphical evidence is not cited in full, although to illustrate certain arguments used in the text a reference is given to every ‘diploma’ in which each regiment is mentioned and also to the _Notitia Dignitatum_.[447] In calculating the strength of the various provincial garrisons the cohorts and alae are reckoned at 500 or 1,000 men each, the mounted infantry of a _cohors equitata_ being estimated at 25 per cent. of the total establishment. For the _numeri_, which probably varied in size, an average strength of 200 men has been taken. I. BRITAIN.[448] Diplomata xxix (98), xxxii (103), xxxiv (105), xliii (124), lv (_ante_ 138), lvii (146). _Alae._ I Asturum 98 (?), 124, 146. _Not. Dign. Occ._ xl. 35. II Asturum Several inscriptions. _Eph. Ep._ ix. 1171 dates from _c._ 180. (Cf. Dio, lxxii. 8). _Not. Dign. Occ._ xl. 38. Augusta Gallorum 98 (?), 124. Not. Dign. Petriana M. C. R. Occ. xl. 45. Augusta Gallorum 98 (?), _ante_ 138, 146. Proculeiana II Gallorum Sebosiana 103, inscription of the third century (vii. 287). Picentiana 124. I Qu//ru (? Cugernorum) 124. Sabiniana vii. 571. _Not. Dign. Occ._ xl. 37.[449] Tungrorum 98, 105, 145-80 (vii. 1090).[450] Hispanorum Vettonum C. R. 103, 197 (vii. 273). Augusta Vocontiorum 145-80 (vii. 1080).[451] _Cohorts._