1281 
Works on the Geology, Mineralogy, and Paleontology of Wales (to the end of 1873) ;— 
On the recent Revival in Trade. 
Together with the Transactions of the Sections, Dr. A. C. Ramsay’s Address, and 
Recommendations of the Association and its Committees. 
PROCEEDINGS or rae FIFTY-FIRST MEETING, at York, 
August and September 1881, Published at £1 4s. 
CONTENTS :—Report on the Calculation of Tables of the Fundamental Invariants 
of Algebraic Forms;—Report on Recent Progress in Hydrodynamics (Part I.) ;— 
Report on Meteoric Dust ;—Second Report on the Calculation of Sun-heat Co- 
efficients;—Fourteenth Report on Underground Temperature;—Report on the 
Measurement of the Lunar Disturbance of Gravity;—Second Report on an In- 
vestigation for the purpose of fixing a Standard of White Light ;—Final Report on 
the Thermal Conductivities of certain Rocks ;—Report on the manner in which 
Rudimentary Science should be taught, and how Examinations should be held 
therein, in Elementary Schools ;—Third Report on the Tertiary Flora of the North 
of Ireland ;—Report on the Method of Determining the Specific Refraction of Solids 
from their Solutions ;—Fourth Report on the Stationary Tides in the English Channel 
and in the North Sea, &c.;—Second Report on Fossil Polyzoa;—Report on the 
Maintenance of the Scottish Zoological. Station ;—Report on the Occupation of a 
Table at the Zoological Station at Naples;—Report on the Migration of Birds ;— 
Report on the Natural History of Socotra;—Report on the Natural History of 
Timor-laut ;—Report on the Marine Fauna of the Southern Coast of Devon and 
Cornwall ;—Report on the Earthquake Phenomena of Japan;—Ninth Report on 
the Erratic Blocks of England, Wales, and Ireland ;—Second Report on the 
Caves of the South of Ireland;—Report on Patent Legislation;—Report of the 
Anthropometric Committee ;—Report on the Appropriation of Wages, &c.;—Re- 
port on Observations of Luminous Meteors;—Report on Mathematical Tables ;— 
Seventh Report on the Circulation of Underground Waters in the Jurassic, 
New Red Sandstone, and Permian Formations of England, and the Quality and 
Quantity of the Water supplied to Towns and Districts from these Formations — 
Report on the present state of our Knowledge of Spectrum Analysis ;—Interim Report 
of the Committee for constructing and issuing practical Standards for use in Electrical 
Measurements ;—On some new Theorems on Curves of Double Curvature ;—Observa- 
tions of Atmospheric Electricity at the Kew Observatory during 1880;—On the 
Arrestation of Infusorial Life by Solar Light ;—On the Effects of Oceanic Currents 
upon Climates ;—On Magnetic Disturbances and Earth Currents ;—On some Applica- 
tions of Electric Energy to Horticultural and Agricultural purposes ;—On the Pressure 
of Wind upon a Fixed Plane Surface ;—On the Island of Socotra ;—On some of the 
Developments of Mechanical Engineering during the last Half-Century. 
Together with the Transactions of the Sections, Sir John Lubbock’s Address, and 
Recommendations of the Association and its Committees. 
REPORT or tHe FIFTY-SECOND MEETING, at Southampton, 
August 1882, Published at £1 4s. 
CONTENTS :—Report on the Calculation of Tables of Fundamental Invariants of 
Binary Quantics ;—Report (provisional) of the Committee for co-operating with the 
Meteorological Society of the Mauritius in their proposed publication of Daily 
Synoptic Charts of the Indian Ocean from the year 1861 ;—Report of the Committee 
appointed for fixing a Standard of White Light ;—Report on Recent Progress in 
Hydrodynamics (Part II.) ;—Report of the Committee for constructing and issuing 
practical Standards for use in Electrical Measurements ;—Fifteenth Report on Under- 
ground Temperature, with Summary of the Results contained in the Fifteen Reports 
of the Underground Temperature Committee ;—Report on Meteoric Dust ;—Second 
Report on the Measurement of the Lunar Disturbance of Gravity ;—Report on the 
present state of our Knowledge of Spectrum Analysis;—Report on the Investigation 
by means of Photography of the Ultra-Violet Spark Spectra emitted by Metallic 
Elements, and their combinations under varying conditions ;—Report of the Com- 
mittee for preparing a new Series of Tables of Wave-lengths of the Spectra of the 
meee ;—Report on the Methods employed in the Calibration of Mercurial Ther- 
885. AN 
