x INTRODUCTION. 
contain Anthracotherium gresslyi (Meyer), common to the Headon 
series of Hordwell’. These observations indicate that the terms 
Pliocene, Miocene, and Kocene cannot be categorically defined, but 
must merely be regarded as marking stages in geological evolution. 
The subyolcanic alluvium of Puy-de-Dome, from the number of 
its extinct mammalian forms, is classed at the top of the Pliocene; 
but it is quite probable that it may really be transitional between 
the Pliocene and Pleistocene. The ossiferous strata of the typical 
Siwalik hills of India, the contemporary strata of Burma and China, 
and part of the Siwaliks of the Punjab are referred to the Pliocene; 
while the lower Siwaliks of Sind and the Bugti hills may not impro- 
bably be referred to the lower part of the same epoch, or may be 
regarded as transitional between the Pliocene and Miocene. The 
Narbadas of India are classed with the Pleistocene. 
TABLE OF EvROPEAN TERTIARY STRATA, 
Val d’Arno (in part). 
Norwich Crag. 
1. Upper PLiocenr, {Yalan of Puy-de-Ddme. 
(?) Red Crag (Suffolk, &c.). 
Ss: 
Montpellier and Casino (Tuscany). 
Coralline Crag (Suffolk). 
2. LowEr PuLiocens. a 
Te mi (Attica) and Mont Lebéxon (Vaucluse). 
g 
S 
Baltavar (Hungary). 
Concud (Spain). 
Eppelsheim (Hesse Darmstadt). 
Ciningen (Switzerland). 
Georgensmind (Wiurtemberg). 
3. Upper Miocene. 
~ 8s 
4. Mippie Mioornz. a. Vienna basin (in part). 
( Hibiswald (Styria). 
Kapfnach (Switzerland). 
Steiheim (Bavaria). 
b. 4 Sansan and Simorre (Gers). 
| St. Gaudens (Haute-Garonne). 
Grive St. Alban (Isére). 
| Chaux-de-Fonds (Switzerland). 
Montabuzard. 
Orléannais. 
Monte Bamboli (Tuscany). 
S 
a. 4 Haslach (near Ulm). 
Hochheim (near Wiesbaden), 
ae ee Gérand-le-Puy (Allier). 
Puy-de-Dome. 
5. Lower Miocene. | Weissenau (near Mayence). 
1 See Lydekker, Geol. Mag. dec. 3, vol. ii. February 1885. 
2 Tt has not been considered necessary. to introduce the Pleistocene. 
