[NDEX. 



Tree Charts, 'j:tr,; ferns, 33: form, :;!'.': 

 '-crowth. 311 : photography. ".PJ. 



Trees in Bartram Garden, I: 1 .:; ; of Phila- 

 delphia, sketch of noted. l:;l. 



Trianea l.oL'iiteiisis. 1'.). 



Tribute to I'rof. Thomas ('. Porter, L>:;;>. 



Trichins. Banded-spore. :ill. 



Trii'olinm Viruiniemn. :;st;. 



Trimblo, I'rof. Henry, 11. 23, 375, 390; 

 biography of. :;i;;;. 



Trinidad plants, 'J,s-J. 



Trips of Moses Marshall, in.".. 



Tritrution of Aiiiiiioniiini 'arboiiatc. :;77. 



Trojiical Botanic Station 



Tropical forest, imaginary, :;:',. 



Trout, 1. 



Trustees of rniversity, letter to. 1:;. 



TsiiKa 1'attor.iana. 290. 



Tubers of Dioscorea species, 'J77, 



Tubulitia eyliiidrica, Notes on hevclop 

 incut of, 313. 



Tnckerman, Dr., INI. 356. 



Tulip poplar, :;i 1. 



Tulip tree, '-':">.">. 



Tunnel Rock, Fairmouut Park, planted 

 with trees, ::i'.i. 



Tuolnnine BiK-tree Grove, 3U5. 



Tupelo, 255. 



Turkey boxwood, 433. 



Tyler, John J., is:>. 



Typha latifolia, 111. 



Tweedy, F., '-".>, in."., >-'. 



Tweedia, 1')!}. 



Twins of Weasel liraucli, 311. 



['linns Americana, L'.">r.. 



I'lrica, tjneen, of Sweden, 52. 



Uncle Isaac, 17. 



Underwood, I'rof., :;'J7. 



I'uitas Fratrinn, 127. 



University Extension Classes, 370. 



University of retinsylvunia. -10, 17 ; chair 



of botany at, 7 ; Botanic Garden of, 



17; History of. IS'j; oldest botanical 



centre, 1 1. 



University of Upsal, s>. 

 Umbilicaria, %. 



x; M'Mahon's. called, 117: I'm 



\ iT-ily of. ss. 

 Uredineae, Sydow's, '.v.i. 

 Utricularia, 1 ;'.(); Mrs. 'I real's studies on, 



299. 

 Use of Plants among Ancieni Peruvians, 



398. 



Vacation Crnisinu, ''.III. 

 Yaccine'e, new plants of, l,"i!i. 

 Yalerianella \\'ooilsiaua var. l>atellaria. 



341. 



Valsei, Additions to. :'.1i>. 

 Valley of Mexico. Flora of. :;:is. 

 Value of Koia n ica i Gardens, '.'.7-. 



Vandii/.en, Matthexv. I:'.'.'. 



Viinillii. Varieties of. :\~*. 



Van Vied, . .laeob. '.17. 



N'ariation in plants, -tudy of. IIPS. 



Variation in l.ea\ <>. :',_'". 



Vascular cryptogams, study of, ill. 



Vasey. Hr. George, n 1 .. '.MI, 327, 3f 



Vanxliall Garden. I: 1 ,:;. 



Vegetable Bbres, 36. 



Vegetable and Animal Cells. Slructure 



and IM\ isioii of, :;ii.s. 

 \"ei;elal.le Cell. Slnieliire anil hl\ish.n 



Of, :;7I. 



Vegetable H . 



\'e;,'etalile Kingdom, C'iiart of. L':;l. 



N'e.uetable Kiiiu'doin. l.indleyS. J.SJ. 

 Vegetable Maleria Medica." 1DU; of the 



U.S.. ic.--' 



X'etreialile Tissues, staining of. :;i(i. 

 N'eyetation of Yellowstone Hot SpriiiL'>, 



398. 

 Venu> lly trap. 'Jl ; iiioveliiellt of lea\c^ 



of. :;r,;i. 



N'elle/Uela l''llll^i. 271 . 



Yetie/.uela and Guiana, boundary of. 1110. 



Veralruiu \ iride, Stnii-tnre ol. :;:';"i. 



Verbena Tweediana. l;i.".. 



Verbesiiia. Abnormal Flou er>. of. :;;is. 



X'ernal Mora, origin of, :','.',. 



\'eriion r.-u-k, 1M. _'.">:;; Jiapaw tree> of, 

 i ' . trees of. l:V\. 



Viburnum plicatum. '_'"..'>. 



Victoria rei;ia discovered, I'.i'i. 



N'ic-loria lank. 111. 



Villard's North Trans-Continental Sur- 

 vey. 283. 



Vine, Fungous l>isea>e> of. :',''.j. 



Vim- i;rowini; at Spring Mills. Pa., lii'.i. 



\iola. l.)d: monograph on, 1:10; Morph- 

 ology of, :',;io. 



Violet Perfume, :',HO. 



Viola tricolor, Botanical Study of, :_1'.IO. 



Viola tricolor, var. arvetisis, 'JL!. 



Virjjilia Intea, 1:;:;. 



N'isit. of Pennsylvania Horticultural 

 Society to Bartram Garden, ss 



Yi lal Force, Correlation of, 310. 



Vitality of Girdled Limb, :;oi. 



Yitis pterophora, lui. 



Votl Sehweinil/.. I,. 1)., 1. '.I, Ul. 



\\a-nei Free Institute, sketch of, 32; 



Transactions of, -12."). 

 Walmslcy. W. H.. 'J2. 

 \Viiifs of Fi^htinR Rocks. 314. 

 Walling it liray'a Tojiograiihical Atlas. 



239. 



Walnuts. The. L'MC,. 

 \Valnuts al llartram's, 70. 

 Walnut, "I'he Mlaek. ::il ; The Row Farm, 



:in. 



Walter'> herbariiini. 111'.. 

 Walton, Joseph, article by. '_'l.'>: biu- 



sraphy of, -'I:: 



Wanamaker, John, garden of, 100. 

 Waples, Professor F.. P.. :','.i:;. 

 Wanner barial-Ki'oiind , lii. 

 \\ a-h in,i;ton. Arbor, ii7. 

 WushiiiKtonia. 117. 

 \\'ashin.LTtollia lilameiitosa. Salt and 



Suuar in. ''<'><. 

 Wntson's P.otany of clarence K i 



Kxpedit ion. is". 



Water color >kelehe> of !lo\\ ers, 11 I. 

 Watson, Gavin, biography of. L'l'i. 

 Watei house, John F., biography of, 17L' 



lecl urea of, 17:;. 

 Water Inannlh.-. In ; lilies. P.I 

 Water Storage and Conduction in Senecio 



pra-cox, :;:i>., ii'.in. 

 Wax Palms. :;:;. 

 Weasel P.ralich, Twins of. :'.! I. 



\\ ebb, i leorge, Poem of. i:;. 



Weeils. T\\ o ( 'eniui-ie.-, of American. l".il : 



of Maine. 358. 



U eli'ome Sprini; l''lo\\ ers, 2fl ! 

 \\'esl Indian trees in Florida. :;(!'_'. 

 \\ e^i Indies visited by 1'r. Uol liroek . :;nv. 



