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Mr. J. J. COLEMAN on a Machine for the Liquefaction of Gases by combined

Cold and Pressure ..............

........

220

Mr. A. CRUM-EWING on Drainage Outlets through Slob Lands ............ 220

Mr. St. J. VINCENT Day on recent Attempts at Patent Legislation .. .. 220

Mr. G. F. DEACON on the Form of Blocks for Testing Cement .........

-- on the Strength of Concrete as affected by delay between

mixing and placing in situ ........

Mr. J. DEAs on Stobcross Docks .........

................ 220

Mr. THOMAS Dobson on Improved Safety-Apparatus for Mine-Hoists and

Warehouse-Lifts ..................................................

222

Mr. MORTIMER Evans on the Application of Spring Fenders to Pier-heads.. 223

on a Safety-Lock for Facing-points. ....

223

Mr. J. B. Fell on the Experiments made at the Camp at Aldershot with a

new form of Military Field-Railway, for rapid construction in war time .. 223

Captain Douglas Galton on Railways on Three-foot Gauge in the United

States .........

Mr. J. H. GREENHILL on an Improved Grain-sieve .....

225

Mr. R. R. HARPER on Improvements in Railway Appliances ...........

Mr. T. S. HUNTER on Dock- and Quay-Walls, Foundations, &c. .........

Professor A, B. W. KENNEDY on Reuleaux's Treatment of Mechanisms .... 226

Mr. BALDWIN LATHAM on the Importance of Hydro-Geological Surveys from

a Sanitary point of view ............

226

Mr. R. MANSEL on the Direct Motion of Steam-Vessels ......

227

Mr. W. J. MILLAR on the Strength and Fracture of Cast Iron .

Mr. JAMES NASMYTI on a Spherical Pendulous Safety-Valve....

229

Professor OSBORNE REYNOLDS on the Steering Qualities of Ships

Mr. R. LAVENDER on a New Form of Lamp .........

Mr. F. J. Rowan on Boiler Incrustation and Corrosion.......

229

Mr. JOHN LANG on an Apparatus for Cleaning Filtering-Sand ....

232

Mr. W. D. Scott-MONCREIFF on a Pneumatic Tramway Car....

233

Mr. Wm. Simons on an Elevating Steam Ferry........

233

Mr. JAMES STEEL on the Brake Problem ....

233

Mr. W. STROUDLEY on Communications between Passengers and Guards in

Railway Trains ....................

233

Sir W. THOMSON on Naval Signalling ........

Mr. J. EVELYN WILLIAMS on Steam-Ship Resistance .........

ERRATUM IN REPORT FOR 1875.

IN THE Reports.

In the Table, p. 174, eighth line from bottom, for 14 read 41.

Note.-The figures in the third and fourth columns in the Table represent

feet and inches.

LIST OF PLATES.

PLATE I.

Illustrative of a Report on the effect of Propellers on the Steering of Vessels.

PLATES II., III. Hlustrative of a Report on the present State of our Knowledge of the Crustacea.

PLATE IV.
Illustrative of a Report on Observations of Luminous Meteors.

OBJECTS AND RULES

OF

THE ASSOCIATION.

OBJECTS.

THE ASSOCIATION contemplates no interference with the ground occupied by other institutions. Its objects are :-To give a stronger impulse and a more systematic direction to scientific inquiry,—to promote the intercourse of those who cultivate Science in different parts of the British Empire, with one another and with foreign philosophers,—to obtain a more general attention to the objects of Science, and a removal of any disadvantages of a public kind which impede its progress.

RULES.

Admission of Members and Associates. All persons who have attended the first Meeting shall be entitled to become Members of the Association, upon subscribing an obligation to conform to its Rules.

The Fellows and Members of Chartered Literary and Philosophical Societies publishing Transactions, in the British Empire, shall be entitled, in like manner, to become Members of the Association.

The Officers and Members of the Councils, or Managing Committees, of Philosophical Institutions shall be entitled, in like manner, to become Members of the Association.

All Members of a Philosophical Institution recommended by its Council or Managing Committee shall be entitled, in like manner, to become Members of the Association.

Persons not belonging to such Institutions shall be elected by the General Committee or Council, to become Life Members of the Association, Annual Subscribers, or Associates for the year, subject to the approval of a General Meeting.

Compositions, Subscriptions, and Privileges. LIFE MEMBERS shall pay, on admission, the sum of Ten Pounds. They shall receive gratuitously the Reports of the Association which may be published after the date of such payment. They are eligible to all the offices of the Association.

ANNUAL SUBSCRIBERS shall pay, on admission, the sum of Two Pounds, and in each following year the sum of One Pound. They shall receive gratuitously the Reports of the Association for the year of their admission and for the years in which they continue to pay without intermission their Annual Subscription. By omitting to pay this Subscription in any particular year, Members of this class (Annual Subscribers) lose for that and all future years the privilege of receiving the volumes of the Association gratis : but they may resume their Membership and other privileges at any subsequent Meeting of the Association, paying on each such occasion the sum of One Pound. They are eligible to all the Offices of the Association,

AssociaTES for the year shall pay on admission the sum of One Pound. They shall not receive gratuitously the Reports of the Association, nor be eligible to serve on Committees, or to hold any office.

The Association consists of the following classes :

1. Life Members admitted from 1831 to 1845 inclusive, who have paid on admission Five Pounds as a composition.

2. Life Members who in 1846, or in subsequent years, have paid on admission Ten Pounds as a composition.

3. Annual Members admitted from 1831 to 1839 inclusive, subject to the payment of One Pound annually. [May resume their Membership after intermission of Annual Payment.]

4. Annual Members admitted in any year since 1839, subject to the payment of Two Pounds for the first year, and One Pound in each following year. [May resume their Membership after intermission of Annual Payment.]

5. Associates for the year, subject to the payment of One Pound. 6. Corresponding Members nominated by the Council.

And the Members and Associates will be entitled to receive the annual volume of Reports, gratis, or to purchase it at reduced (or Members') price, according to the following specification, viz. :1. Gratis.-Old Life Members who have paid Five Pounds as a compo

sition for Annual Payments, and previous to 1845 a further sum of Two Pounds as a Book Subscription, or, since 1815, a

further sum of Five Pounds. New Life Members who have paid Ten Pounds as a composition. Annual Members who have not intermitted their Annual Sub

scription. 2. At reduced or Members' Prices, viz. two thirds of the Publication

Price.-Old Life Members who have paid Five Pounds as a
composition for Annual Payments, but no further sum as a

Book Subscription.
Annual Members who have intermitted their Annual Subscription.
Associates for the year. [Privilege confined to the volume for

that year only.]
3. Members may purchase (for the purpose of completing their sets) any

of the first seventeen volumes of Transactions of the Association, and of which more than 100 copies remain, at one third of the Publication Price. Application to be made at the Office of the Association, 22 Albemarle Street, London, W.

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