48 



Note on the Botanical Specimens from Mount Ophir. [Jan. 



Hourly Observations of the Thermometer taken for four days in 1832. 



1832. 



XII. 



I. 



II. 



III. 



IV. 



V. 



VI. 



VII. 



VIII. 



IX. 



X. 



XI. 



19th Aug. 

 23rd Sept. 

 21st Oct... 

 18th Nov. 



81 

 77 

 67.5 

 59 



80.5 



74.5 

 65.5 

 57 



80.5 

 74.5 

 65 

 56.5 



80.5 



74.5 

 64.8 

 55.7 



80 

 74.1 

 63.7 

 55.3 



80 

 73.3 

 61.8 

 55 



80.7 

 73 

 61 

 54 



83 

 77 

 61.6 

 54 



85.7 

 79.7 

 66.5 

 57 



88 

 84.5 

 71 

 62.7 



89 



88 

 74 

 67 



90.8 

 90 



76 

 72 



Means, . . 



71.1 



69.4 



69.1 



68.9 



68.3 



67-5 



67.2 



68.9 



72.2 



76.5 



79.5 



82.2 



1832. 



Noon. 



I. 



II. 



III. 



IV. 



V. 



VI. 



VII. 



VIII. 



IX. 



X. 



XI. 



19th Aug. 

 23rd Sept. 

 21st Oct. 



18th Nov. 



94 

 92 



79 



75 



92 



92 

 81 



77 



91 



92.5 



81 



78 



90 

 92 



79.8 

 78 



90 

 91 



78 



77 



88 

 90 

 75 

 74 



86 

 86 

 71 

 70.3 



85 

 82 

 69 

 68 



84 

 80.5 

 68 

 64 



83 

 79 

 67.3 

 62 



82.5 

 79 

 67 

 61 



82 

 78 

 66.9 

 60.5 



Means. . . . 



85 



85.5 



85.6 



84.9 



84 



81.7 



78.3 



76 



74.1 



72.8 



72.4 



71.9 



Do. of pairs. 



78.1 



77.5 



77.4 



76.9 



76.1 



74.6 



72.7 



72.4| 



73.2 



74.7 



75.9 



77.0 



Differences. 



+ 2.51 



+ 1.89 



+ 1.73 



+ 1.36 



+0.59 



—0.91 



— 2.80 



— 3.10 



— 2.37 



—0.86 



+ 0.39 



+1.47 



The last column shews the differences of the means of pairs (of hours of the same,) from the 

 mean temperature of the whole twenty-four hours 75°. 55. The 19th August was cloudy after ten 

 o'clock ; the rest were fine throughout. The greatest heat of the day occurs at 2 p.m.: the mini 

 mum temperature at 6 o'clock in the morning. 



XI. — Note on the Botanical Specimens from Mount Ophir. 

 [Accompanying Lieut. Newbold's Letter — Read 30th February.] 



The specimens from Mount Ophir, with which I was favored the day 

 before yesterday, consist of two Ferns, three Lycopodinese, and two Phse- 

 nogamous plants. They are not in a good state of preservation, and 

 only one has any fructification, but they are nevertheless very valuable, 

 and I feel greatly obliged to Lieut. Newbold for them. The most in- 

 teresting among them is a specimen full of good sori of Matonia 

 pectinata, Brown, published in 1830, in Plants Asiatics Rariores, 

 vol. i. p. 16, tab. 16, from a specimen, unique in Europe, which was 

 gathered in the identical locality by Col. Farquhar. The individual now 

 before me beautifully confirms the generic character and general observ- 

 ations relative to this remarkable fern, which were politely supplied for 

 the above work by Mr. Brown ; in shape it differs in having a bifid 

 frond, the pinnse being unilateral towards the bifurcation. The other 

 fern may perhaps be a Blechnum. The Lycopodinese are very curious, 

 and belong seemingly to new species. Of the Phamogamous plants, 

 one is exceedingly remarkable. It has the habit of some members of 

 the coniferous, as well as the myriceous, tribe ; the structure of the 

 wood obviously brings it under the former ; the leaves are acerose, op- 

 posite, and gland-dotted. Perhaps it is a Dacrydium. The other plant 

 belongs perhaps to the family of Ericese. 



Botanic Garden. N. Wallich. 



