ANIMAL AND VEGETABLE PRODUCTS. 185 
the measurement of water by notches similar to the one experimented on, 
and for quantities of water limited to nearly the same range as those in 
_ the experiments; but as being, of course, subject to amendment by more 
_ perfect experiments extending through a wider range of quantities of 
water. 
Out of the grant of £10 from the Association for these experiments, the 
_ amount for which J have hitherto had to apply to the Treasurer as having 
_ been expended in them is £8 Os. 4d.; which leaves a balance remaining of 
- £1 19s. 8d. 
___ It will be readily observed, that the experimental investigations indica- 
_ ted in the foregoing report as desirable, are such as would require for their 
_ completion, and extension to large flows of water, a greatexpenditure both of 
time and money, like as has already been the case with researches on the flow 
: of water in rectangular notches. All that I can myself for the present pro- 
_ pose to attempt, is to open up the subject with experiments on moderately 
small flows of water; and with this view, I would be glad to be aided, by a 
_ further grant from the Association, in continuing experiments of the kinds 
_ already undertaken. 
- 
, Report of the Committee on the Magnetic Survey of Great Britain. 
.: By Major-General Sainz, 
4 
_ Tue Committee are glad to be able to state that the Survey has made good 
: progress in the course of the present year. Mr. Welsh has completed the 
_ Survey of Scotland and its adjacent islands, by adding observations at a suf- 
ficient number of points on the islands to the north and west of the main 
land to those he had made in Scotland itself in 1857. General Sabine has 
employed himself in North and South Wales; and Dr. Lloyd, having asso- 
ciated with himself Professors Joseph Galbraith and Samuel Haughton, and 
George Johnstone Stoney, Esq., has obtained observations on the course of 
the isoclinal and isodynamic lines over Ireland generally. 
There is probably another year’s work before the Survey will be so far 
advanced that its different parts can be coordinated, preparatory to the final 
account being prepared for presentation to the Association. In the mean 
time Dr. Lloyd is desirous that the names of Messrs. Galbraith, Haughton, 
nd Stoney should be added to those of the Committee named in 1856. 
Report on Animal, Vegetable, and Mineral Substances imported from 
Foreign Countries into the Clyde (including the Ports of Glasgow, 
Greenock, and Port Glasgow) in the years 1853, 1854, 1855, 1856, 
1857. By Micuart Connau, Esq., and Witu1AM KeEppiE, 
Esq., Glasgow. 
Tue following returns have been obtained from a careful examination of 
_ the Clyde Bill of Entry, printed by the Custom House authorities at Glasgow. 
The returns embrace only substances imported from foreign countries, ex- 
_clusive of those received “ coastwise.” From the vague and often inaccurate 
manner in which the entries are made, it has been found impossible to classify 
a number of the substances. Those of unknown or uncertain character have 
~been placed under the head of Miscellaneous, 
yy 
- 1858. ° 
et 
