/ 



INDEX. 



Hookeria oblongifolia, 80. 

 Hookeria Tahitensis, 79. 

 Hypmun apertimi, 73. 

 Hypnum arcuatum, 74. 

 Hypnum aristatum, 76. 

 Hypnum decurrens, 77. 

 Hypmmi Draytoni, 76. 

 Hypnum Eudorce, 77. 

 Hypmwi molliculum, 78. 

 Hypniwi moUuscoides, 73. 

 Hypnum mundulum, 75. 

 Hyjmum opceodon, 77. 

 Hyjmum Pickeringii, 74. 

 Hypnum sodale, 78. 

 Hypmim 7 speciosissimicm, 75. 

 Hypnum tejiuisetum, 78. 

 Hypnum Tutuilum, 75. 

 Hyjmum Wilkesianum, 73. 

 Mniadelplius Vitimms, 79. 

 Neckera tricostata, 81. 

 Pilotrichum setigerum, 80. 

 Rhizogonium pungens, 82. 

 Muscle, on the intimate structure of^^l- 



N. 



Naiades, the form of the family of, 879. 



Nitric Acid, the value of saltpetre for the manufacture of, 354. 



Nutritive value of amylaceous articles of food, 89. 



411 



O. 



Officers, 2, 41, 132, 196, 257. 

 Oncocarpus, 51. 

 Opuntia, 289 - 310. 



Subgen. 1. Stenopuntia^ 289. 

 grandis, 289. 

 stenopetala, 289. 

 Subgen. 2. Platopimtia, 290. 

 angustata, 292. 



