306 REPORTS ON THE STATE OF SCIENCE. 
the animal walked erect on the pes, and only used the manus to steady 
itself when bending down to drink or feed. The palmar surface of the 
hand is seldom seen, but when present it is, as well as the fingers, covered 
with scaly tubercles. The digits are terminated by small triangular 
claws. 
On the same slab there are the tracks of two other Cheirotheroid 
forms corresponding with the type of Al. The surface, too, is dotted 
with numerous Rhynchosauroid forms, and it is interesting to note that 
the slender digits of these animals show fine tubercular skin markings 
similar to, but smaller than, the Cheirotheroids. ft 
The surface of this slab is covered with a smooth ferruginous scale 
which has taken the cast of the moulds in the underlying clay in a most 
perfect form. 
An examination of the scale shows it to be composed of sand grains 
cemented by iron oxide. The iron has no doubt percolated in solution 
through the overlying sandstone as far as the impervious clay band on 
which the footprints were made. The beds below are even now much 
drier than those above. Specimens of the sandstones have been examined 
at intervals of 10 feet throughout the depth of the quarry (110 feet), 
and it is found that those above the footprint bed, 60 feet from the surface, 
contain, as a rule, less felspar and mica than those below this horizon. 
Secondary crystallisation on the quartz grains is also more common in the 
upper series than the lower. They all contain small quantities of other 
minerals such as zircon, tourmaline, anatase, rutile, kyanite, staurolite, 
chert, and numerous black grains of uncertain composition ; but in the 
scale overlying the clay there is a concentration of these minerals. 
Zircon especially is very abundant in very minute crystals. 
It is noteworthy that while numerous samples have been fractionated 
with heavy fluids, not a single grain of garnet has been obtained. The 
overlying boulder clay and the sands of the Mersey contain an abundance 
of this mineral. The same remark applies to all the Triassic rocks I haye 
examined in the Liverpool district, and in this respect they differ from 
the Trias in the South of England examined by Mr. H. H. Thomas.! 
Lhe Flora and Fauna of the Trias (Keuper only) in Leicestershire, with 
some Notes on that of the surrounding counties. By A. R. Horwoop, 
Sub-Curator, Leicester Corporation Museum. 
In Leicestershire the principal fossiliferous horizon of the Keuper is 
the Upper Keuper sandstone. 
From that horizon there have been collected or recorded plant- 
remains, Annelid and Crustacean tracks, &c., Estheria minuta (Alberti), 
spines and teeth of Acrodus kewperinus (M.and 8.), Acrodus (?) minimus, 
Ag., Acrodus spp. Gyrolepis quenstedti (Dames), Colobodus frequens 
(Dames), a footmark of (1) Labyrinthodon, bones of Amphibia, &c., bones . 
of Reptiles. The best exposure at the present time is at Shoulder-of- 
Mutton Hill, in the railway cutting (Leicester and Burton line). r 
The flora is suggestive of land conditions, but the plant-remains are 
imperfect, and may well be compared to those of the Upper Carboniferous 
or Permian formations. 
The fauna suggests an inland sea or possibly a salt lake. 
* Quarts Journ. Geol, Soc., November 1902, p. 620. 
