INDEX. 



489 



Uromyces Martiuii, Farlow, 78. 



Peckiauus Faiiow, 78. 



SpartiuiE Farlow, 77. 

 Urtica cliamcedn'oides, Pursli., 155. 



spirealis, Blume, 155. 



mens, Liuu., 155. 

 Ustilago Maydis, Corda, 190. 

 Utricularia deuticulata, Beuj . (?),132. 



V. 



Valeriana sorbifolia, HBK., 99. 



tolucana, DC, 99. 

 Vanadio-molybdates, 240. 

 Vanadio-tungstates, 219. 

 Vauadio-tungstic acid, 251, 252. 

 Vauadio-tungstate of ammouium, 250. 

 Vauadio-vanadico-molybdates, 261;. 

 Vauadio-vauadico-molybdate of am- 

 monium, 261. 

 of barium, 265. 

 tungstate of sodium, 267. 

 tungstate of silver, 269. 

 Vapor-deusity, on the, of the chloride, 

 the bromide, and the iodide of 

 antimony, 61. 

 VariUa Mexicana, Gray, 105. 



Texana, Gray, 105. 

 Venus, transit of, December 5 and 6, 

 1882, at the Harvard College 

 Observatory, 15. 

 Contacts, 17. 

 Observers, — 



S. C. Chandler, Jr., 23. 

 J. R. Edmands, 22. 

 E. C. Pickering, 19. 

 W. H. Pickering, 24. 

 Arthur Searle, 20. 

 O. C. Wendell, 21. 

 at other stations, 24. 

 diameter of, 30. 



report of S. C. Chandler, Jr., 



35. 

 report of WilUam A. Rogers, 

 30. 

 photometric observations, 25. 

 spectroscopic observations, 29. 

 Verbascum virgatura. With., 129. 

 Verbena bipinnatilida, Nutt., 136. 

 bracteosa, Michx., 136. 

 canescens, HBK., 135. 

 ciliata, Benth., 136. 

 officinalis, Linn., 135. 

 polystachia, HBK., 135. 

 remota, Benth., 136. 



Verbena urticsefolia, Linn., 135. 



xutha, Lehm., 136. 



Wrightii, Gray, 136. 

 Verbesina Coahuilensis, Gray, 106. 



encelioides, Benth. & Hook., 106. 



stricta. Gray, 106. 



Virginica, Linn., 106. 



Wrightii, Gray, 106. 

 Veronia artissima, Nutt., 100. 



angustifolia, Michx., 100. 



Ervendbergii, Gray, 100. 



Greggii, Gray, 100. 



Lindlieimeri, Gray, 100. 



Schaffneri, Gray, 100. 

 Veronica peregrina, Linn., 130. 

 Viburnum membranaceum, Benth. & 

 Hook., 96. 



prunifolium, Linn., 96. 

 Viguiera canescens, DC, 105. 



helianthoides, HBK., 105. 



linearis, Schultz Bip., 105. 

 Vincetoxicum Mexicauum, 115. 



w. 



Weight of a body, a simple method of 

 correcting the, for the buoy- 

 ancy of the atmosphere when 

 the volume is unknown, 55. 



Weissia longirostris, Schwaegr. (?), 

 189. 



TVTiitworth steel yard, 297. 



Wigandia Kunthii, Choisy, 118. 



Wohler, Priedrich, notice of, 463. 



Wood, on the products of the dry 

 distillation of, at low tempera- 

 tures, 47. 



Woodsia mollis, J. Smith, 188. 

 obtusa, R. Br. (?), 188. 

 Mexicana, Pee, 188. 



Xauthisma Texanum, DC, 102. 



Yale observatory standards, 330. 

 Yard, 



Bronze yard and meter, 293. 



Brass yard and meter, 294. 



Glass yard and meter, 295. 



Whitworth steel, 297. 



