45 
From the last observation it would appear that T Tauri, 
after being at a minimum for some time, is now brightening 
up again ; and judging from the course of its changes in the 
early part of last year, a maximum may be expected to occur 
within the next two months. 
A Paper, by Mr. Trios. Heelis, “ On Swell Observed at 
Sea, particularly in the Regions of the South-east Trade 
Wind,” was then read, in which the Author, after examining 
the causes of swell and giving instances and especially alluding 
to the rollers at Ascension, St: Helena, and Tristan d’Acunba, 
gave some instances of the observed succession and order of 
the undulations in altitude and of the speed of translation 
of the crests, which in one instance he had found to attain 
twenty-two miles per hour ; and, after setting forth a table 
of different instances of swell chiefly in the Atlantic and 
Indian Oceans, and Bay of Bengal, addressed himself to the 
consideration of the swell which is frequently observed in 
tropical latitudes in the southern hemisphere to roll up from 
the southward. This he attributed to the action of currents 
setting especially in the Indian Ocean from the neighbour- 
hood of the southern tropic, towards the great connecting 
current which extends from the Cape of Good Hope to 
Australia. The Author gave instances of tliesg currents 
experienced in 
35°47' S. 79°10' E. running south 27 miles in 24 hours. 
28°22 / S. 81°13' E. „ „ 27 
26°42'S. 8l°45'E. „ „ 23 
23°38 / S. 83°10 / E. „ S. 50° E. 42 „ 
