584 



INDEX. 



Hieracium Greenei, 69. 



horridum, Fries, 66. 



Lemmoni, Gray, 70. 



JMexicamini, Less., 70. 



? ]\Iogollense, 69. 



nudicaule, 68. 



Parishii, 67. 



Tringlei, 69. 



Rusbyi, Greene, 67. 



Scoiileri, Hook., 66. 



triste, Cham., 66. 



Wrightii, 68. 

 Ilodotennes, Hagen, 142. 



V Coloradensis, 142. 

 Humphreys, Andrew Atkinson, no- 

 tice of, 526. 

 Hydrophyllacejs, 87. 

 Hymenatherum, Cass., 36, 40. 



acerosum, Gray, 40. 



aureum, 42. 



Belenidium, DC, 41. 



diffusum, Gray, 40. 



gnaphaliopsis. Gray, 42. 



Greggii, 42. 



Hartwegi, Gray, 41. 



Naii, DC, 41. 



Neo-]\rexicanum, 40. 



pentach?etum, DC, 42. 



polychajtum, Gray, 40. 



setifolium, 42. 



tagetoides, Gray, 40. 



tenuifolium, Cass., 40. 



tenuilobum, DC, 41. 



Thurberi, 41. 



Treculii, 42. 



Wrightii, Gray, 41. 

 Hymenopappus 



artemisiajfolins, DC, 29. 



corymbosus, Torr. & Gray, 29. 



filiiblius, Hook., 29. 



Mexicanus, 29. 



scabiosajus, L'Her., 29. 



tenuifolius, 29. 

 Hymenoxys, 32. 



I. 



Inuloidefe, 3. 

 Ipomoea cuneifolia, 90. 



Lemmoni, 91. 



tenuiloba, Torr., 91. 



Thurberi, Gray, 90. 

 Ixeris, Cass., 73. 



Jones, evening observations, 183. 



L. 



Labiatfe, 96. 

 Lactuca, 72. 



acuminata, 73. 



Canadensis, L., 72. 



Floridana, 73. 



graniinifolia, 73. 



hirsuta, Muhl. & Nutt., 73, 



iiitegrit'olia, Bigelow, 73. 



leucoph?ea, 73. 



Ludoviciana, DC, 73. 



pulchella, DC, 73. 

 Lactucastrum, 73. 

 Laphamia, 18. 

 Layia Douglasii, Hook. & Am., 17. 



Jonesii, 18. 

 Le Conte, John Lawrence, notice 



of, 511. 

 Leguminosfe, 74. 

 Lentibulariacefe, 95. 

 Lepidospartum squamatum, 50. 



feptocephala}, DC, 43. 

 Liquids and solids, a new theory 

 of cohesion applied to the 

 thermodynamics of, 353. 

 Liquids, expansion of, according to 



Thorpe, 452. 

 Lobeliaceai, 82. 

 Loeselia Havardi, 87. 

 Loganiacese, 86. 



Longitude of zenith, for stations in 

 north latitude, 179. 



for stations in south latitude, 

 182. 

 Lonicera Sullivantii, 76. 



M. 



IMachaonia fasciculata, 77. 



Macrocephalai, DC, 42. 



Macrorhynchus, 71. 



Madiese, 17. 



Malvaceic, 74. 



Margaranthus Lemmoni, 91. 



Meatus, external, relation of, to the 

 first visceral cleft. 111. 



Mendelejeff's formula, comparison 

 of, with the mean results of 

 Kopp and Pierre, 453. 



