642 PHILOSOPHICAt. TRANSACTIONS. [aNNO ITQQ. 



those observations, then at the time of the transit of the planet it was l*" and 1 

 slower than apparent time. 



At 7^ 6"*, according to the time shown by the clock, a small indenture ap- 

 peared on the sun's limb; the increase of it at 7^ 6™ 14% showed plainly that it 

 was made by the expected planet. The internal contact was first noted at 7*^ 23"^ 

 56% and at 7^ 24™ 8% the divided part of the sun's limb seemed wholly united. 

 The edge both of the sun and planet were in a continual tremor; at the internal 

 contact the limb of the sun seemed, for several seconds, to be alternately united 

 and again separated by a kind of shootings of the planet. These observations, 

 reduced to apparent time, give the external contact at 7^ 7"" 1% the internal con- 

 tact at 7^ 25*" 9% the duration IS-" 8'. 



The solar eclipse was observed by the same clock and telescope. It was mani- 

 festly begun at IS*' 34"" 26% according to the time shown by the clock. The 

 ending was exactly noted at 20'^ 20™ 8K The sun's limb appeared very well de- 

 fined all the morning. These observations, reduced to solar time, make the 

 beginning of the eclipse at 18'' 35'" 21% the end at 20'' 21"" 2% the duration 

 l^ 45"" 41'. 



By the mean of a great number of observations, made for the purpose, the 

 latitude of Leicester was found to be 52° 37' 3". 



The latitude of Market Harborough, in Leicestershire, from the mean of 

 several accurate observations of the sun's image, projected into a dark room, by 

 S. Rouse, was 52° 28' 30'. 



XXXIII. On a Rare Plant found in the Isle of Shye, By John Hope, M. D., 



F.R.S. p. 241. 



This plant was found, September 1768, in a small lake in the island of Skye, 

 by James Robertson, whom Dr. H. had sent there in search of new or rare 

 plants. The whole of it, except the head and top of the stalk, was under the 

 surface of the water. Wherever the water was shallow, the bottom of the lake 

 was covered with this plant, whose roots were so closely interwoven, that in some 

 places large patches were torn up by the agitation of the waters, or other vio- 

 lence, and found floating on the surface, matted together. The plant, when 

 seen without its flowering stem, resembles somewhat the calamaria Dill. Histor. 

 Muse. tab. 80. Though it differs, in many circumstances, from the generic 

 characters of the eriocaulon. yet Dr. H. was inclined to think it the eriocaulon 

 decangulare, which had never been described, or properly figured. 



XXXIV. Astronomical Observations made by Samuel Holland, Esq. Surveyor 

 General of Lands for the Northern District of North America, and others of 

 his Party, p. 247. 



March 8, 1769, observed by Samuel Holland, Esq. at his house, bearing 



