Narrative of the surveying voyages of his majesty's ships Adventure and Beagle (vol.1): between the years 1826 and 1836 : describing their examination of the southern shores of South America, and the Beagles's circumnavigation of the globe

584. Table III, Daniel's Hygrometer, observed at 3 p.m., daily, and compared with the mean temperature. Monthly mean tem. 1 from Table II. j Temperature of \ _ dew point Difference between") mean temperat. > and dew pomt J Dryness (the point"! of Saturation be- > ing 1000; J Elasticity of vapour Weight of a cubic") foot of vapour in [> grains J AUTUMNAL PERIOD. Feb. March. April o 51-10 41-31 9-79 711-8 295-7 3-3441 o 49-37 40-75 8-62 736-42 289-0 3-2801 41-22 34-83 6-39 809-9 238-64 2-7550 BRUMAL PERIOD. May. June. July. o 35-47 o 32-97 33-03 34-88 30-28 29-41 0-59 2-69 3-62 980-6 903-8 876-3 239-04 202-24 196-46 2-7926 2-3731 2-3048 12 Days of August. MEANS. Autum. Brumal. Au. &Br o 33-25 30-28 2-97 894-6 202-2 2-3421 47-23 38-96 8-27 752-71 274-44 3-1264 o 34-49 31-52 2-30 920-23 212-58 2-4902 o 40 -SG 35-21 836-47 243-51 2-808.3 Table IV. Months. Temperature. Dew Point, Range pressure. Air. Water. Hygrometer. Max.. Min. Range. Max. Min. Range Max. Min. Range Max. Min. inches. inches. inches. o February 30-087 28-768 1-319 66 28 38-0 52-5 43-7 8-8 51-2 31 202 March 30-099 29-004 1-095 68 30-5 37-5 50-5 41-5 9-0 47 35 12 April 30-055 28-844 1-211 57-5 28 29-5 47-8 40-5 7-3 42 27 15 May 29-850 28-795 1-055 49-5 20-5 29-0 48-2 42-8 5-4 43 21 22 June 30-079 28-274 1-805 48-7 19-2 29-5 47-0 40-3 6-7 41-5 20 21-5 July 30-500 28-942 1-558 44-2 12-6 31-6 45-0 41-8 3-2 39-7 19 20-7 Auf^ust"^ 12 days / 29-782 28-709 1-073 49-2' 18-5 1 30-7 43-1 40-2 2-9 37-2 20-5 16-7