ther in their larva or perfect state. The fine sand and vegetable fibres may have been taken accidentally along with these creeping objects. The examination of the fæces proved satisfactory with regard to the insectivorous nature of the Perameles, which I had been led, along with others, to suspect, from the sharp pointed tubercles of the molar teeth, the freedom and length of the tongue, and the long slender form of the claws. IX.—Meteorological Journal, from the Mouth of the Rio de la Plata to the Coast of Chili, 1822 ; with a Chart. By WILLIAM JAMESON, Esq. Surgeon. (Read 13th December 1823.) DEAR SIR, LIMA, 5th August, 1822. I have enclosed a MS. chart of our track round Cape Horn. (See annexed Engraving.) The longitude, which is marked for noon, was generally determined with accuracy by means of three excellent chronometers entrusted to my care, and I have also marked the longitude, as estimated by dead reckoning, where there was any considerable deviation. In laying down the track, you will perceive I have adopted the method recommended by Captain Hall. In the passage round Cape Horn, the vicissitudes from heat to cold, and again from cold to heat, are very remarkable. At Rio de Janeiro, in February and March, , the thermometer usually stands at 80° or 85°. In three weeks we reached the parallel of the Cape in Lat. 56° S., where, with frequent storms of hail, snow and sleet, we have the temperature of the air reduced to the freezing point. Having doubled the Cape, we make a direct northerly course, and in another fortnight we again enter a tropical climate. The change of temperature in the sea-water is no less remarkable. I have the honour to be, &c. WILLIAM JAMESON, a |