On the effect of prolonged stress upon the strength and elasticity of pine Method of determining the value of the solar parallax from meridian obser . On recent deep-sea soundings in the Gulf of Mexico and Caribbean Sea, by the U. S. Coast Survey. By J. E. HILGARD Comparison between the yard and metre, by means of the reversible pendu A preliminary investigation of the causes of lateral deviation of spherical Note on the theory of the flight of elongated projectiles. By H. T. EDDY On the mechanical principles involved in the flight of the boomerang. By H. 22 |