290 REPORTS ON THE STATE OF SCIENCE, ETC. 



5. Measurement of the porosity of sandstones, chalk, etc. 



6. Determinations of specific gravities of rocks and minerals. 



These experiments could be developed, especially in a course of General 

 Science. One advantage is that they require little equipment and only a 

 small space. While they may be used to supplement observational work 

 and to enliven the ordinary laboratory work to some extent in the early 

 stages, these experiments cannot entirely displace the examination and 

 sketching of material. In any case field work must form an essential part 

 of almost any geological course. 



The practical work related to map study may also be extended by the 

 construction of simple block models to illustrate structures. Rectangular 

 models to show true and apparent dips and outcrops, or folds in plan and 

 section, can be built up in paper very easily ; it is very helpful for pupils 

 to make a variety of these at an early stage. 



REPTILE-BEARING OOLITE, STOW. 



Report of Committee appointed to investigate the reptile-bearing oolite near 

 Stozv-on-the-Wold, subject to the condition that suitable arrangements 

 be made for the disposal of the material (Sir A. Smith Woodward, 

 F.R.S., Chairman ; Mr. C. I. Gardiner, Secretary ; Prof. S. H. 

 Reynolds, Mr. W. E. Swinton). 



The two quarries in the Chipping Norton Limestone near Stow-on-the- 

 Wold, from which reptilian remains have been obtained before, have been 

 visited from time to time and the reptilian remains found there brought 

 away and sent to London for extraction and restoration. Most of them are 

 now in the Stroud Museum. 



Of the four groups of reptiles represented — Crocodile, Theropod, Sauropod 

 and Carnivorous Dinosaurs — all but the last one are in the series collected 

 since the issue of the previous report of the Committee.. They include : 



Crocodiles. — Several vertebrae and a nearly perfect scapula. 



Theropod Dinosaurs. — An ilium, a sacrum and a right femur, this last 

 being in an almost perfect condition and the finest bone in the series. 



Sauropod Dinosaurs. — An enormous caudal vertebra, an almost perfect 

 right coracoid and two ischia. 



Professor Reynolds is studying the specimens and hopes shortly to 

 publish a description of them. The Committee is unanimously of opinion 

 that an application for a further grant should be made. 



