780 
which these Pachyderms must be referred, present, he says, consider- 
able uniformity of circumstance, yet they must have sosthoce some 
variety of detail in the animal organization. 
Finally, the characteristics in the minute ‘structure of the tasted of 
all the five animals betray, the author observes, greater varieties than 
are found to exist even betwixt some genera possessed of tusks ; and 
if it be established that specific differences positively do exist among 
all these animals, then the value of this kind of observation is great ; 
but if the five animals are all to be grouped in one category, then this 
mode of observation is of no value in paleontological researches. 
3. “ Notice on the Discovery of Insects in the Wealden of the 
Vale of Aylesbury, Bucks, with some additional observations on the 
wider distribution of these and other Fossils in the Vale of bine 
Wiltshire.” By the Rev. P. B. Brodie, F.G.S. 
In a former notice (anié, p. 134) Mr. Brodie announced ‘the dis- 
covery of insects as well as a new genus of Isopods in the Wealden 
beds of the Vale of Wardour, and in this communication he gives an 
account of additional localities in the same Vale, where he has found 
both the insects and crustaceans, and of the strata belonging to the 
Wealden series, in which he has obtained fossil insects, in the Vale of 
Aylesbury. 
Vale of Wardour.—The precise spot noticed in the former paper is 
aquarry at Dallards, and the first point to which the author now calls 
attention, is situated about two miles to the south-east of it. The fol- 
lowing section is given of the beds at the new locality, the dip being 
slightly to the south :— 
tt) 7 ie 
1. Top. Debris of rounded fragments of greensand and ps 
Portland stone, with their usual fossils, a few inches | 
thick. - 
2. Chert, full of Cyclas; it also contains occasionally . 
PSO CaS a Oa ee OR a eee eee Hopi 
3. Hard, brownish white limestone, with Ostree and 
casts of other shells, some resembling those of Cy- 
clas major. The upper layers much disturbed .... 2 0 
4. Black earthy clay, a few inches. 
5. Purbeck stone, varying in character but containing 
REC HAVES rere etree tre te Oe ae Seen went tier ae Spe 
6. Fissile, soft stone full of Modiole, palates and other 
remains of fishes, also bones of a species of tortoise 1 0 
7. White limestone, containing Tsopods and elytra of 
pL ELES OLS 1 pathetic h ie alanis hn cela tien tSeey: op ie: 3.0 
Hardstone. | 
In an escarpment in the banks of the adjoining river are two beds 
of limestone, from the upper of which Mr. Brodie obtained small ely- 
tra, and from the lower Cypris, and from both carbonized wood, also 
a species of Cyclas. Under these strata is a very oolitic limestone, 
in which the author found a small Melanopsis and a seed-vessel. 
