Part 74

Plants, medicinal properties of, 47

Pleomorphism, Bacteria and, 265

---- Uredineae and, 266

Pollen, Amici's discovery, 194, 195

---- R. Brown and, 115-116

---- chamber, in Cycas, 187-188

Polyembryony, 117

Popularisation of Science, 250

Potato disease, 231, 266

Praeger, R. L., on Harvey, 202-224

Presl, on Ferns, 145-147

Preston, C. and G., Materia Medica and, 283

Primofilices of Arber, 257

Proteaceae, R. Brown on, 114

Protective mimicry in Orchidaceae, 116

Protoplasm, von Mohl and, 135

Pteridophyta, Griffith on, 188

---- alternation of generations, 188-189

Pteridosperms, secondary growth in, 256

---- seeds of, 257

Q. J. M. S., Ward and, 263-266

Quaker Schools, Science in Irish, 205

Ray, John, life of, =28-43=

---- ---- on Classification, 28-29, 34, 36-38

---- ---- on floral morphology, 35

---- ---- influence of, 23, 109

---- ---- Jung and, 15

---- ---- Methodus Plantarum, 32-34