. Elementary lectures on veterinary science, for agricultural students, farmers, and stockkeepers ... show signs of wear at theiredges. 374. Molars and Premolars.—Between birth and up to four weeks old three temporary pre-molars on each side of each jaw,above and below, are seen, the second and third coming throughbefore the first. The fourth tooth, or first permanent molar andthe anterior premolars make their appearance between the fifthand sixth month, and are well up at the ninth month. From tento twelve months the fifth tooth or second permanent molar is seen,and about three months after (


. Elementary lectures on veterinary science, for agricultural students, farmers, and stockkeepers ... show signs of wear at theiredges. 374. Molars and Premolars.—Between birth and up to four weeks old three temporary pre-molars on each side of each jaw,above and below, are seen, the second and third coming throughbefore the first. The fourth tooth, or first permanent molar andthe anterior premolars make their appearance between the fifthand sixth month, and are well up at the ninth month. From tento twelve months the fifth tooth or second permanent molar is seen,and about three months after (fifteen months old) the three firsttemporary premolars are shed, and permanent teeth take theirplace; while between the seventeenth and eighteenth month thesixth tooth and last permanent molar is forward. And after thisthe teeth wear and become dark in colour. Dental derangementsin pigs are, however, of rare occurrence, and veterinary aid is seldomor never required. 375. For further information on the subject of the dentition ofthe horse, cow, sheep, and pig, the reader is referred to Professor. HGSKIO S5 t:} - • ^ c <D <D (Tl rt o 1 tfl (J X ^1 1 rt cfl In O c 53 13 ^ <u •c J3 ec ,^ CD C/) C o X Crt Cfl t) S S ^ ^ ^ t c o o t< OJ ovinovinrew to B B M C 1 g C/5 n, ^ ^ ^ ^ CO o ^^•^ p^ U W C/5 m ^ CO a a n. 8 H Or ForceForceForce c2 bec O o i3 n rO P. ^. p OS O h H U Oh CG H M C» m rf vo o DENTITION AND DENTAL DISEASES 257 Sir Geo. Browns pamphlet, Dentition and Age of the Animalsof the Farm. I may add that I have found this little work veryaccurate. DOG. 376. The dog, like other domestic animals, has both a temporaryand a permanent set of teeth, divided into incisors, canines, anteriorpremolars, premolars, and molars. The milk teeth are twelvetemporary incisors (six above and six below, in front of the jaw),four temporary canine teeth or tusks (two above and two below,one on each side, the upper, as a rule, being the strongest), and twelvetemporary premolar


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