ONE:On the laws of heat and cold, and atmospheric changes under their influence, many interesting facts were ascertained by the aid of the thermometers of Fahrenheit and Raumur. Dr. Martin, of St. Andrews, distinguished himself in these inquiries, and published his discoveries and deductions in 1739 and 1740. In 1750 Dr. Cullen drew attention to some curious facts connected with the production of cold by evaporation. Dr. Joseph Black discovered what he called latent heat, and continued his researches on this subject beyond the present period.On the opening of Parliament, in January, 1738, a desperate effort was made by the Opposition at once to reduce the army and to kindle a war with Spain. Walpole proposed to place the army on a footing of seventeen thousand men. The "Patriots," as they were called, voted to reduce the number to twelve thousand. Walpole, exasperated at their factious conduct, launched an indignant sarcasm at them, which produced so much effect that they did not venture to divide on the motion. "No man of common sense," said Walpole, "will now profess himself openly a Jacobite; by so doing he not only may injure his private fortune, but must render himself less able to do any effectual service to the cause he has embraced; therefore there are but few such men in the kingdom. Your right Jacobite, sir, disguises his true sentiments. He roars out for revolutionary principles; he pretends to be a great friend to liberty and a great admirer of our ancient Constitution; and under this pretence there are numbers who every day endeavour to sow discontent among the people."