1040 An Observation on the Hybridization |November, 
effect of reducing rates, and will do so still more, for the charges 
have not yet reached bed-rock. When this desirable result ha’ 
been achieved, the Yellowstone National Park will become one of 
the most popular resorts for tourists of all nations, who will be 
amply repaid by an inspection of one of the few remaining 
regions of the earth where thermal activity still reaches its sur- 
face, and of the grand and impressive scenery which surrounds it. 
A’ 
oe 
AN OBSERVATION ON THE HYBRIDIZATION AND 
CROSS-BREEDING OF PLANTS! 
BY E, LEWIS STURTEVANT, M.D. 
EORG von Martens, in his Gartenbohnen, Ravensburg, 1869, 
p- 35, under Phaseolus Pardus virescens, the graugrune pan- 
therbohne, says: “I was very much surprised to obtain not less 
than eight varieties of beans, die incarnatbohne, die dottergelbe- 
bohne, die weissebohne, die amethystfarbige zebrabohne, die 
graugrune pantherbohne, die helle pantherbohne, die gelbge- 
fleckte pantherbohne, and the princessinbohne. With more tho- 
rough investigation I decided that the zebrabohne was most 
likely a neighbor which had overrun the bed, but all the others 
came from the bed, and some, the incarnatbohne and the weisse- 
bohne had not been planted in the whole garden.” Martens 
might have expressed surprise that these varieties from the seed 
of the graugrune pantherbohne were all towards named varieties 
rather than sports or intermediates, but this fact, which frequently 
appears noted in his book, does not receive attention as being of 
any importance. 
At the New York Agricultural Experiment Station, in 1882, a 
few oblong beans, slightly flattened sidewise and mottled in two 
shades of brown, were selected from the yield of the golden 
cranberry. This selection, planted by itself in 1883, gave eleven 
distinct forms, many of which can be referred to named varieties, 
and possibly with a greater acquaintance with varieties all might 
be so referred; an illustration confirmatory of the results above 
noted by Martens, and is strengthened by a list of similar occur- 
- rences with other varieties in 1883 numbering a score. 
~ This fact of named varieties being produced from seed of other 
"varieties i is not confined to the bean family alone. The following 
* Read before section F, A. A. A, S. at the Ann Arbor meeting. 
