POTATOS. 
403 
the first year, or perhaps, more correctly speaking, the second 
year. In this case the flower was fertilised in the summer of 
1894, and the seed was sown in the spring of 1895. The photo- 
graph was taken in September of the year last named. 
Illustration No. 12 shows us a similar seedling in its fourth 
year, and indicates the gradual maturing of the tubers into 
a fixed and regular type. I may add that it is not until the 
No. 11. — Potato Seedling, First Yeap. 
Fig. 39. 
fourth or fifth year that it is possible to say how far the character 
of the seedling is fixed or not. 
SrEciES AND Varieties. 
It may now be interesting to notice other species and 
varieties of Potatos of more or less distinct forms and 
characteristics. 
No. 13 is a photograph of Solanum ctuherosum, grown for 
many years in the Edinburgh Botanic Gardens by Mr. R. 
