572 



INDEX. 



Sodic S-monobrompyromucate, lil. 

 phos2>horoso-tungstate, 88. 

 tribrompyromucate, 178. 

 Sodio- amnionic tungstate, 76, 77. 

 Sodio-potassic arsenoso-phospho- 



tungstate, 100. 

 Sodium, phospho-vanadico- vana- 

 date of, 62. 

 Solanacese, 402. 



Solanum diversifolium, Schlecht. , 

 431. 

 elseagnifolium, Cav., 434. 

 nigrum, Liun., 434. 

 sisymbriifolium. Lam., 434. 

 verbascEefolium. Linn., 434. 

 Solidago Bigelovii, Gray, 432. 

 elata, Pursh, 412. 

 erecta, Pursli, 412. 

 Sound, early experiments in tele- 

 graphing, 262. 

 Spectrum, on the conditions that 

 determine the length of the, 

 361. 

 Sperraacoce megalocarpa, Gray, 



381, 431. 

 Sphacelaria arctiva, Harv., 477. 

 Spiranthes Madreusis, Benth. & 



Hook. ?, 441. 

 Spondias lutea, Linn., 463. 

 Sporobolus annuus, Vasey, 443. 

 asperifolius, Thurber, 443. 

 Indicus, R. Br., 443. 

 ramulosus, Kunth, 443. 

 repens. Kunth, 443. 

 Shepherdi, Vasey, 443. 

 tricholepis, Torr, 443. 

 Stanno-phospho-molybdate, ammo- 



nic, 120. 

 Stanno-phospho-molybdates, 119. 



analytical methods, 119. 

 Stanno-phospho-tungstate, ammo- 



nic, 118. 

 Stanno-phospho-tungstates, 118. 



analytical methods, 118. 

 Stemodia durantifolia, Swartz, 435. 



Palmeri, (iray, 403, 435. 

 Stevia laxiflora, DC, 382, 431. 



linoides, Schultz Bip., var. 



grisea, Gray, 382, 431. 

 Madrensis, Gray, 382, 431, 

 micrantha, Lag., 431. 

 monard;efolia, HBK.,var. cor- 



difolia, Gray, 431. 

 Palmeri, Gray, 381, 431. 

 salicifolia,, Cav., 381, 431. 

 serrata, Cav., 431. 



Stevia stenophylla, Gray, 881. 



venosa, 382, 431. 

 Stigmaphyllon Lupulus, 461. 

 Stillingia bicarpellaris, 455. 

 Symphonia globulifera, Linn., 459. 



T. 



-,394, 433. 



Tabernseraoutana 



Taenite, 479, 483, 490. 

 Tagetes lucida, Cav., 433. 

 micrantha, Cav., 433. 

 Palmeri, Gray, 392, 433. 

 Wislizeni, Gray, 392, 433. 

 Talinum bi'evicaule, 446. 

 Tecoma stans, Juss., 435. 

 Telanthera stellata, 436. 

 'J'elegraphing sound, early experi- 

 ments in, 262. 

 Telephone currents, measurement 



of the strength of, 248. 

 Telej)hone, thermal experiments 



with the, 257. 

 Temperature, on the effect of, on 

 the viscosity of air, 1. 

 apparatus, description of, 2. 

 critique of the method, includ- 

 ing comparisons of mercurial 

 and air thermometers, 25. 

 deduction from results, 18. 

 discussion of results of all re- 

 searches on air and CO.2, 19. 

 experimental results with dry 



air, 7-14. 

 with carbonic acid, 14-17. 

 pressure, effect of, 18. 

 procedure in measurements, 6. 

 references, 44. 

 Tephrosia affinis, 424. 

 tenella, Gray, 424. 



Tetracera '?, 457. 



Tetramerium hispidum, Nees, 435. 

 Thelypodium Howellii, 445. 

 Thermometers Baudin 8208 and 

 8209, comparison of, with 

 the air thermometer at low 

 temperatui'es, 45. 

 Thunder-storms, on the methods 

 of study of, 336. 

 discussion of observations, 345. 

 general phenomena of, 336. 

 methods of observation else- 

 where, 310. 

 France, 340. 



