82 Proceedings of Indiana Academy of Science 
remove with each plant or cluster of plants a large mass of the soil 
in which they were growing. The early blooming of Trillium nivale 
is well known. This often takes place before the snow has left the 
ground. The warmth generated by the plant at times melts the snow 
away in the form of a small well about the plant and entirely to the 
ground. The plants which were transplanted in the way indicated 
above finally grew very densely, as shown by Figure 1, and the earliest 
bloomers melted the snow in large areas. Being able to follow the 
course of development more closely and conveniently when planted in 
the box, it could easily be seen that sufficient warmth was generated 
by the young plants as soon as they had broken through the soil to 
melt the snow, which was often present to some extent, although this 
melting was not evident at all times on the surface. On removing the 
top layers of snow a dome-shaped space over and about the young 
plant of considerable extent was usually to be found. 
In the part of the box shown in the protograph (Figure 1) between 
fifty and sixty plants in bloom may be seen by a careful count. This 
photograph represents about one-fourth of the whole area of the box. 
The blooming plants were fully as numerous all over the interior of 
the box as in the part shown in Figure 1. This would amount to some- 
thing over two hundred blooms which had been produced by the orig- 
inal plants and by new plants which had grown since the first ones 
were planted. 
Two of the plants were observed to have advanced the growing end 
of the rhizome considerably during the first ten years. This amounted 
to a movement of fifteen cm., or an average of 1.5 cm. per year. The 
rhizome, however, did not increase apparently in total length from the 
time of transplanting, since as it advanced at the growing end it died 
away at the other end and thus maintained about an even length. This 
agrees with the mode of life of many other similar subterranean plant 
structures. 
These plants seem, although densely crowded, to have continually 
and rapidly increased for the first ten years. Since then and during 
the last five years the average increase in number has been small. The 
number of individuals, although still vigorous, seems to have become 
so great that all the available space for more individuals to grow in 
the space offered by the box has been reached and a balance in this 
respect established. The plants are all equally illuminated and all the 
other conditions equally favorable for all. It will be noticed in Figure 1 
that the plants of equal age show differences as to size. Especially in 
some individuals the photograph shows a decided difference in the size 
of the flowers. This difference is, however, only slightly more pro- 
nounced than the writer has observed on the average on equal counts 
of individuals made in the field and under the original conditions. 
The density as to numbers of individuals rarely if ever equals that 
shown by Figure 1 over the same area in the original habitat. A few 
individuals may, of course, come up close together, but this is only for 
a very few specimens, while an equal number as that shown by Figure 1 
would be scattered over a much larger area, since much more space 
is available in all directions. This plant in its native habitat shows a 
