INDEX. 
951 
S. 
Sabine (Major-General Edward). On Periodical Laws discoverable in the Mean Effects of the 
larger Magnetic Disturbances. — No. III., 357. — General conclusions, decennial period, 361 ; 
annual period, 364 ; diurnal variation, 366. 
On the Lunar-Diurnal Magnetic Variation at Toronto, 499. 
Salmon, observations on the ova of the, 21 (see Davy). 
Stenhouse (Dr. J.). Examination of select Vegetable Products from India, 141. 
T. 
Thomson (Professor William). Elements of a Mathematical Theory of Elasticity, 481. — Part I. 
On stresses and strains (perfect and imperfect concurrences between stresses and strains, &c.), 
481 ; Part II. On the mechanical conditions of relation between stresses and strains, expe- 
rienced by an elastic solid (reduction of the potential function ; six principal strains of an 
elastic solid, &c.), 493. 
Bakerian Lecture, On the Electro-dynamic Qualities of Metals, 
649. — On the electric convection of heat, 651 ; on thermo-electric inversions, 698 ; effects of 
mechanical strain, and of magnetization, on the thermo-electric qualities of metals, 709 ; 
methods for comparing and determining galvanic resistances, illustrated by preliminary expe- 
riments on the effects of tension and of magnetization on the electric conductivity of metals, 
730; on the effects of magnetization on the electric conductivity of metals, 736. 
Tomes (John, Esq.). On the Presence of Fibrils of Soft Tissue in the Dentinal Tubes, 515. 
Tyndall (Professor John). Further Researches on the Polarity of the Diamagnetic Force, 
237. — Introduction, 237 ; description of apparatus, 240; experiments, deportment of diamag- 
netic bodies, 243 ; deportment of magnetic bodies, 252. 
W. 
Welsh (John, Esq.). Account of the Construction of a Standard Barometer, and Description of 
the Apparatus and Processes employed in the Verification of Barometers at the Kew 
Observatory, 507. 
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