1895.] Botany. 581 
actual specimens in the possession of the author, with a few exceptions 
where species were admitted on the authority of recent scientific publi- 
cations. 
In this catalogue 1,890 species were enumerated, almost equally 
divided between the flowerless and flowering plants. | Important 
additions were made by members of the Seminar during the two years 
following the publication of the catalogue, and early in 1892, Mr. 
Webber published an “ Appendix” to his first catalogue. This, with 
other additions published at the same time in a “ Supplementary List,” 
brought the whole number of species up to nearly 2,500 not quite 
equally divided between flowerless and flowering plants, the latter ex- 
ceeding the former by about 150. A year later, 1893, in the “ Report 
on Collections made in 1892” 162 species were added, and in the 
“ Report for 1893 ” published in 1894, 184 additions were made, bring- 
ing the whole number of species (after making necessary corrections) 
up to abont 2,820, again almost equally divided between flowerless and 
flowering plants. The collections made last year, now nearly worked 
up, will amount to about 220 or more species, so that the list of known 
species now approximates 3,050. The flowerless plants now surpass 
the phanerogams, there being fully 1,600 of the former, to about 1,450 
of the latter. From this time forward the ascendency of the lower 
plants is assured, since it is quite certain that by far the larger part of 
the flowering plants have already been catalogued. 
Throughout the work, the original rule of basing all additions upon 
actual specimens has been adhered to, and in all the later work every 
specimen has been deposited in the Herbarium of the Survey. Some of 
the earlier collections are still in the private herbaria of members of 
the Seminar, but these will doubtless eventually be deposited in the 
Survey Herbarium also. 
Along special lines a more particular study of the distribution of 
species has been made; thus the distribution of the woody plants has 
been mapped for each species, the whole including a series of small 
maps on which the area covered by each species is indicated by red- 
ink shading. In addition the data so obtained have been published in 
the bulletins of the Experiment Station (No. 18, 1891), the Annual 
Report of the Nebraska State Horticultural Society (1892), and the 
Annual Report of the Nebraska State Board of Agriculture (1894). 
Sixty-four trees and seventy-seven shrubs are now known to occur in 
the State, and their distribution is already quite well known. 
The final reports of the Survey are to take the form of a systematic 
descriptive work, in whieh every species is to be fully described, accom- 
39 
