100 Reports from Botanical Section. 



Uumboldilite, from Italy. — The two first analyses were executed by 

 Mr. Clutterbuck, the third by Mr. George Alexander. 



i. n. in. 



Silica, 42-57 4536 43*16 



Alumina, 277 4*76) 17 . 60 



Peroxide of Iron, 1400 12-40 / 



Magnesia, 3-40 588 2-40 



Lime, 30-56 3060 — 



Soda, — 120 — 



Primitive Clay Slate, Mica Slate, and Graywacke. — The first was ana- 

 lysed by Br. Lewis, R.N., the second by Mr. John Adam, the third by 

 Mr. James Macbryde. 



Clay Slate. *£ n L Q 7f rs Wigton 



J Mica Slate. Graywacke. 



Spec. Gray., 2*70 2.74 2-77 



Protoxide of Iron, 5*86 11-96 9*47 



Perphosphate of Iron, 1'36 1-38 0.94 



Lime, 062 1-16 0'96 



Magnesia, 1-20 095 230 



Potash, 1-84 0-29 



Soda, — 



Alumina, 25*13 1712 1168 



Silica, 58-47 66-63 72-18 



Water, 312 100 240 



Sulphur, 0-66 — — 



} ^ 9 } 0-95 



98-26 100-49 100-88 



Reports from Botanical Section. 



24th June, 1845. — The President in tlw Cliair. 



Specimens of Cypripedium pubescens and spectabile were exhibited 

 from the Botanic Garden. The specimens had been transmitted by Dr. 

 Gavin Watson of Philadelphia. The President also exhibited dried spe- 

 cimens of Cheirostemon platanoides, the Hand-tree, or Manitas, of South 

 America, — explaining the peculiar structure of the stamens; — and a 

 specimen of Androsace alpina, which had been gathered by Dr. Barry on 

 Mont Blanc, at the height of 10,000 feet.— Dr. Balfour then gave a 

 short account of a botanical trip, with his pupils, to Roseneath, the Row, 

 Largs, and Wemyss Bay, Dumbarton, and Bowling, and noticed a few of 

 the more interesting plants collected, — such as Hymenophyllum Wilsoni, 

 in Ardenconnel Glen; Valeriana pyrenaica, Cardamine amara, Sedum 

 Telcphium, Carum verticillatum, (Enanthc crocata (exhibiting no orange 

 juice when cut), Rumex sanguineus /3 viridis, Milium effusum, Sagina 



