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412   THE HORSE OF' ANAU IN ITS VARIOUS RELATIONS.

The molars both of the Anau horse and of the other subfossil horses are represented by hundreds, but a detailed study of them can be of use only when we possess sets of teeth which surely belong together, as we fortunately have in a complete half of a palate from Anau.

After what has been said in reviewing the specific characteristics of ass and horse, it is superfluous to follow the course of each enamel plication. Here we will notice the principal differences; as regards the masticating surface the accompanying drawings (fig. 491) will speak for themselves. Nehring and later Salenski affirm that the relations assumed by Frank, for the Oriental and Occidental horses, between length and breadth of masticating surface (teeth broader than long in the Oriental, and longer than broad in the Occidental horse) are not decisive; indeed this relation is greatly influenced by the age of the animal, since through progressive grinding off of the teeth these become smaller towards the roots, and the row of teeth shortens. Nevertheless a comparative tabulation of the size-relations of the whole row of teeth is probably worth making.

Table of dimensions (in millimeters).

Molar

Molar

2.

Molar

Pre-
molar 4.

Pre-
molar 3.

Pre-
molar 2.

3.

Length of series.

Grinding surface of upper molars.

.-^.

b4

~

C!

~

~ be

r..

W

~

b4

~

C1

.L:

b

S.' b

~

'5

'f.

a-~

b4 Q C1

b4

~

G!

• 4

b4 q

G1

Anau (Equus caballus pumpellii)

5-year-old specimen   

Sanie, —24 feet   

Kesslerloch diluvial horse, 8

years   
Auvernier domestic horse,

bronze age, 6 years   
Königsfelden, Alemannic time,

7 years   

Hostomitz, 4 years   

Remagen, diluvial horse, after

Nehring, Io years   
Remagen diluvial horse, after

Schwarze   
Thiede diluvial horse, after

Nehring, 6 years   
Westeregeln d i 1 u vial horse,

after Nehring, old.    . .
Equus przewalskii, after Sal-

enski    î
Equus przewalskii, Mus. Bern.. Indian horse, after Nehring,

7 years, Mus. Berlin   
Arabian horse, after Nehring,

7 years   
Grisonian horse, after Nehring,

8 years   
Pinzgau (Tyrol) horse, after

Nehring, io years   
Holstein horse, after Nehring,

Io years   
Dutch horse, after Nehring, 3o

years old   

176 152

28

38

28

26

26

25

27

26

27

24

24

32

I00

20

26

26

26

26

27

25

25

31

21

26

96

150

25

25

24

24

23

37

33

37

35

37

38

24

24

31

8i

23

24

24

24

24

153

I27

22

23

2I

2I

25

20

21

17

26

I 6 2

136

25

23

24

25

25

22

2I

2I

24

24

91

89

26

26

27

25

22

23

23

23

23

23

170

144

169

26

29

29

27

29

25

24

24

26

(?)

29

29

27

28

28

28

28

28

26

30

30

22

22

38

(?)

37

40

26

26

26

26

31

29

27

23

28

26

26

26

29

29

27

29

29

23

27

30

27

25

170-

185

25 2I

27

29

23

2I

2I

22

30

23

26

29

28

30

29

28

26

154

23

37

38

38

38

23

25

22

25

23

25

26

27

25

26

25

25

23

168

26

26

27

27

27

24

27

27

24

26

174

25

26

27

27

27

27

27

25

181

28

28

25

26

29

27

27

25

30

169

38

28

28

25

26

27

28

27

27

24

26

174

37

23

27

27

23

27

27

25

34