CONTENTS. 
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Page 
Objects and Rules of the Association . v 
Officers and Council ... viii 
• 
Treasurer’s Account ...*. X1 
Desiderata . ....... . 
Address of Sir William Hamilton..... xli 
REPORTS ON THE STATE OF SCIENCE. 
Report on the Recent Progress and Present Condition of the Ma¬ 
thematical Theories of Electricity, Magnetism, and Heat. By 
the Rev. W. Whewell, Fellow and Tutor of Trinity College, 
Cambridge .. • 1 
Apercu de l’Etat actuel des Sciences Mathematiques chez les 
Beiges. Par A. Quetelet, Directeur de l’Observatoire de 
Bruxelles.... 35 
On the Phenomena of Terrestrial Magnetism. Being an Abstract 
of the Magnetismus der Erde of Professor Ch. Hansteen. By 
Captain Edward Sabine, R.A., F.R.S. 61 
RESEARCHES 
UNDERTAKEN AT THE REQUEST OR SUGGESTION OF THE ASSOCIATION. 
Report on the Comparative Measurement of the Aberdeen Stand¬ 
ard Scale. By Francis Baily, Treas. Royal Society, &c. 91 
Impact upon Beams. By Eaton Hodgkinson .. 93 
Observations on the Direction and Intensity of the Terrestrial 
Magnetic Force in Ireland, made by the Rev. Humphrey Lloyd, 
M.A., F.R.S., &c., Professor of Natural Philosophy in the Uni¬ 
versity of Dublin; by Captain Edward Sabine, R.A., F.R.S., 
&c.; and by Captain James Clarke Ross, R.N., F.R.S., &c., 117 
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