Index to Vo Is. I~X. 45 
Peronospora parasitica, nuclei of gonidia (*), iv. 142 ; nuclei of hyphae 
(*), iv. 133.; nuclei of oogonium (*), iv. 135. 
Perroud, Louis Frangois. Obituary notice, iii. 485. 
Pertz, D. F..M., and Darwin, F. — On the artificial production of Rhythm 
in Plants (with woodcuts 6-11), vi. 245. 
Petrosavia, Beccari, On the Embryo of (P. Groom) (*), vi. 380. 
— — description, ix. 53. 
Petrovic, Sava. Obituary notice, iii. 485. 
Peyritsch, Johann Joseph. Obituary notice, iii. 486. 
Peziza, lily-disease, gonidial stage (*), ii. 319. 
Pfeffer, W.— Geotropic Sensitiveness of the Root-tip, viii. 317, 
Phaeophyceae, list of, in which sexual reproduction is unknown, v. 524. 
Phaeozoosporeae, Observations on (T. Johnson) (*), v. 135. 
Phalleae and Glathreae, relationship of (*), x. 355. 
Phalloideae, description of British (*), iv. 87 ; general account, iv. 18. 
dispersion of the spores by the agency of insects (T. Wemyss 
Fulton) (*), iii. 207, 217. 
Phallus impudicus, dispersion of spores, iii. 210 ; hymenophore-structure, 
iii. 209. 
Pharmacosycea, sp ., conduction of carbohydrates, iii. 164 ; laticiferous 
tubes (*), iii. 163. 
Phaseolus adenanthus, pollination (*), v. 350. 
lunatus, pollination, v. 350. 
Phillips, R. W. — Note on Saccorhiza bulbosa, J. G. Ag., and Alaria 
esculenta, Grev., x. 96. 
On the Development of the Cystocarp in Rhodomelaceae (with 
Plate X), ix. 289 ; II (with Plates XII and XIII), x. 185. 
Phloem, internal in the root and stem of Dicotyledons (D. H. Scott and 
G. Brebner) (*), v. 259. 
recent progress in our knowledge of, iv. 152. 
Photinia (§ Eriobotrya) deflexa, description, ix. 153. 
Photography, A new application of, to the demonstration of certain 
physiological processes (W. Gardiner), jv. 163. 
Phreatia formosana, description, ix. 156. 
Phrynium capitatum, seed (*), x. 19. 
Phycomyces, hydrotropism, vi. 373. 
Phyllagathis, distribution and consideration of species, vi. 315. 
Phyllidium, i. 144 et seq. 
Phyllocyanic acid, preparation, vi. 235. 
Phyllocyanine (*), iii. 82 et seq. 
Phyllome and Caulome, Limits of the use of the terms (F. O. Bower), i. 
i 33 . 
Phyllopodium diffusum, pollination, v. 368. 
Phyllotaonin, preparation, &c., iii. 101 et seq. 
Phylloxanthin (*), iii. 82 et seq. ; definition and properties, vi. 236. 
Physiological action at a distance, On the cause of (L. Errera), vi. 373. 
Physiology and Chemistry of Foliage-leaves, A contribution to the (H. T. 
Brown and G. H. Morris), vii. 271. 
and Morphology of Pulpy Fruits, Contributions to the (J. B. Farmer) 
(*), iii- 393- 
Pieters, A. G. — The Influence of F ruit-bearing on the Development of 
Mechanical Tissue in some Fruit-Trees, x. 51 1. 
Pilularia globulifera, Development of (D. H. Campbell) (*), ii. 233. 
embryo (*), ii. 250 ; female prothallium and macrospores (*), 
