353 
of Edinburgh^ Session 1864-65. 
He tlien gave some account of the hill terraces of the early races, 
of which there had been numberless speculations ; he agreed with 
recent inquirers in thinking that they were simply designed for 
horticultural and agricultural purposes. Mr Chambers, lastly, 
drew attention to the rudely shaped monumental stones in the 
Vale of Tweed, on which he had found no elaborate or artistic 
sculptures, such as occurred in northern districts. Kecent investi- 
gations concerning upright stones have happily put to flight a 
variety of those mythic legends and fables which were at no 
distant date the reproach and pollution of our topographic lite- 
rature. As regards the whole of the interesting memorials of past 
times which had been adverted to, Mr Chambers trusted that the 
Society would join with him in the wish that land proprietors 
would, as far as practicable, make some effort for their preserva- 
tion. 
[The paper was illustrated with a number of large pictorial 
drawings.] 
5. On the Molecular Constitution of Organic Compounds, 
No. I. By Alfred K. Catton, B.A., Fellow of St John’s 
College, Cambridge, Assistant to the Professor of Natural 
Philosophy. 
The author stated this to he the first of a series of papers, in 
which he intended to develop in detail a new theoiy of the mo- 
lecular constitution of organic and inorganic compounds. 
In this paper the author considers the constitution of the olefines 
aldehyds C 2 „H 2 „ 02 , fatty acids, hydrides of alcohol radicles 
C'5jnH2n+2, alcohols C2„H2„-}-202, glycols C 2 „IF.-j- 204 . (C = 6, 0 = 8.) 
The following Donations to the Library were announced : — 
Jahresbericht iiber die Fortschritte der Chemie und verwandter 
Theile anderer Wissenschaften fiir 1863. II. Heft. Griessen, 
1864. 8 VO. — From the Conductors. 
Annual Keport for 1864 of the G-eologists’ Association. London. 
8 VO. — From the Association. 
3 A 
VOL. V. 
