150 BULLETIX OF WISCOXSIX XATURAL HISTORY SOCIETY. VOL. 2 XO. 3. 
shade to prosper in such places. Then the thicket would be fol- 
lowed directly by the culmination type of forest. Xo actual case 
of this kind has, however, been observed, so far. Generally speak- 
ing, the advent of man has made it more difficult, rather than 
otherwise, for the forest of the region to progress to its culmi- 
nation in the maple-basswood-beech association, for reasons given 
at length in the paper on Milwaukee County. 
6. Eastern Wisconsin Plants from the Herbarium of the Milwaukee Public 
Musetjm. 
The herbarium of the Public Museum of the City of Milwau- 
kee contains some excellent material, and with proper attention 
may in the future grow into a collection of considerable value. It 
now numbers over 10,000 sheets, and is divided into Wisconsin, 
United States and foreign (mostly Central European) material. 
Aside from a collection of mosses, mostly from Europe, only the 
Spermatophytes and Pteridophytes are represented. (Within the 
last two years, a collection of fungi has been started and is 
rapidly growing). 
The Wisconsin department, as, in fact, practically the whole 
herbarium, has grown up, as it were, by accident. That is, vari- 
ous private collectors have from time to time contributed material. 
This has been arranged simply by placing each sheet in its proper 
genus cover. The A\'isconsin genera lie in their case according 
to families, but for the rest of the collection, even so much has not 
yet been done. As might be expected under these circumstances, 
the herbarium shows great gaps : as is usual with amateur collec- 
tors, the most common and characteristic species of a given 
locality are often absent, while there is a fair proportion of ''rari- 
ties." The determinations have usually been made by the collec- 
tors themselves, and as a result great confusion exists regarding 
the nomenclature, in which, however. Gray's ^lanual seems to 
have been followed most often. Unfortunately some of the col- 
lectors have ieemed it unnecessary to add the authority for the 
name given to a plant, which increases the confusion. In the 
following list no attempt is made to reduce the nomenclature to 
a modern standard, but the name is reproduced as found on the 
specimen sheet. The determinations seem to be correct, on the 
whole. There may be some errors, especially in the more difficult 
genera and families, but not enou.s^h to impair the value of the 
following list, such as it is. Another unfortunate defect^ in the 
herbarium is the scantiness of the field notes, which made it quite 
impossible to attempt a classification of the species according to' 
the character of their habitat. 
