ALPHABETICAL INDEX. 



77 



N. 



Natural selection 20 



Neo-Darwinism xii, n, 51 



Neo-Darwinism and Neo-I v amarckism . xii, n 



Neo-Laniarckism xii, n, 53 



Nomenclature, notes on xi 



North America, historical review of 

 faunal and floral divisions proposed for . vii 



Notes on nomenclature xi 



Notes on the genus Phylloxera, new . . . xi 



Notes on parasites xvii, xviii 



Notes, paleontological, from the north 

 west coast x 



Nurture vs. Nature 33 



o. 



Odor of flowers in attracting insects . . . xiv 



Officers for 1891 xii 



Orban, Alexis, election of x 



Ordovician strata, discover}' of vertebrate 



life in xiii 



Organisms in St. Peter's sandstone . . . . ix 



Organisms, problematic x 



Origin of variation 1,4 



Osborn, H. F 2, 6r, 62 



Osborit, H. F. Review of the discovery 

 of cretaceous mammals . . .xiii 



P. 



Packard, A. S -53 



Paleontological notes from the northwest 



coast .x 



Paleopathology, notes on xvii 



Paleozoic genera, variation in vii 



Palmer, T. S. Some early views of the 



geographical distribution of species . viii 

 The winter aspects of the Mohave Des 

 ert region xviii 



Palmer, Wm. The occurrence of the 

 Asiatic cuckoo on the Pribylov 



Islands xi 



The distribution of certain mammals, 

 birds and plants on the Pribylov 



Islands xvi 



The fate of the fur seal in American 



waters xvii 



Palms, date, recent introduction of. . . . xv 



Pangenesis 26 



Panmixia 52 



Parasites, notes on xvii, xviii 



Parasites of live stock, practical value of 



investigating xv 



Parrakeet, Carolina, monograph of .... xv 



Peace Creek bone beds in Florida, age of xiv 

 Pelecypods, development of hinge in . . . 8, 9 



Perigenesis of the plastidule 29 



Pfliiger 25 



Phylloxera, new notes on xi 



Physiological selection 52 



Physiological units 2 6 



Plant diseases, recent progress in the 



study of X vi 



Plants, distribution of, on the Pribylov 



Islands X vi 



Plants, food, of the Indians of the Death 



Valley region xvii 



Plants, Potomac fossil, recent discoveries 



of 



Plants, some Florida 



Plastidule, perigeuesis of the 



Possibility of variation not equal in every 



direction 5 



Poulton , Edward B 34 



Prairie dogs, remarks on the affinities of xix 

 Prentiss, D. W. Change in the color of 

 human hair ; change in the color of 

 plumage of birds, and in the fur of 



mammals vi 



Pribylov Islands, the distribution of cer 

 tain mammals, birds and plants on the xvi 

 Pribylov Islands, the occurrence of the 



Asiatic cuckoo on the xi 



Propagation, vegetative, of Dicentra 

 cucnllaria, x 



R. 



XIX 

 . XV 



29 



1 Rabbit, a new, from Snake Plains, Idaho. 



Lepus idahoensis xi 



| Radiolario, Haeckel's, of the Challenger 



expedition xviii 



Relations of conscious effort 3 



Review, historical, of fauual and floral 



divisions proposed for North America . vii 

 Revisio Geuerum Plantarum, review of 



Kuntze's xix 



Reyburn, Robert. The life history of 



micro-organisnr s with its relation to 



the theory of evolution viii 



Ricardo , 65 



Richardson, C. W., election of vii 



Riley, C. V. Colors of insects vii 



New notes on the genus Phylloxera . . . xi 



The Mexican arrow weed and jumping 



bean xvi 



Romanes, G. J 10, 51, 52 



Roome, E., election of v 



Rose, J. N. Coulterella, a new genus of 



Compositae ix 



