136 INDEX. 



Page 



Onoflea 33 



((pliioglossacesE 33 



Opuntia luiniifiisa. flistril)iuii)n of in Micliisan. reference 6 



Orachi 46 



Orchard grass 37 



Orchklaceie 42 



Orchid family 42 



Origin of the Ohio flora, reference to paper on G 



Origin of organic forms, method of ;?8 



Origin of species by natural selection 25 



Orthezia. generic characters of . 82 



Osmunda 33 



Osipundaceio 33 



Ost rya 44 



Osalidacese 53 



Oxalis 53 



Ox-eye-daisy 67 



r. 



Paleontology and phylogeny 25 



Panax 57 



Panicularia 37 



Paniciim 36 



Pansy 56 



Papers presented at sixth annual meeting, list of 6 



Parke. H. H., reference to paper by 6 



I'arlatoria, generic characters of ■ SI 



Parsnip .' . .' 57 



Parthenocissus 55 



Parthenogenesis and the law of reproduction 15 



Partridge-berry 63 



Paspalum 35 



Passing of the native American, reference to paper on 6 



Pastinaca 57 



Pasture rose 51 



Pea 53 



Pea family 52 



Pearl. Raymond, on reactions of the Inftisoria in electric current 6 



Pedicularis (jjt 



Pennyroyal 61 



Penthorum • 50 



Pentstemon 02 



Pepper-grass 49 



Pepper-root 49 



Persicaria 45 



Perularia 42 



I'ettit. K. H.. on scale insects 78-83 



Petunia 02 



Phalaris 3g 



I'haseolus 53 



Philotria 35 



Phleum 3(5 



Phlox family 60 



I'hryma 63 



Phrymaceae 6S 



I'hylogeny and comparative anatomy 25 



Phylogeny and paleontology 25 



J'hysalis ,-■[ 



I'hysalodes ^jl 



Phytolacca 4^; 



l*hytolaccace<e 4(j 



