XXIV.] SPONTANEOUS MIXING OF TOMATOES. 397 



recent discussion of this experiment will be found 

 in "Plant -Breeding," page 123.]— Bulletin 3J2, Cor- 

 nell Experiment Station, pp. 171 to 173 fOctoher, 1891). 



Do tomatoes mix in the field? — For several years 

 we have observed that occasional plants in a tomato 

 field bear fruits not "true" in color, size, and shape. 

 It has been our habit to attribute these "rogues" to 

 mixing of the seed in handling, but these plants 

 appear in seeds of our own saving, where every care 

 has been exercised to keep the seeds separate. The 

 feeling grew upon us that some, at least, of this 

 untrueness to type must be due to crossing. In 1890, 

 therefore, we sought to test the matter. Two or 

 three plants of each of six varieties were set closely 

 together in a row, all the plants of each variety be- 

 ing together. The varieties and the order were as 

 follows : 



1. Potato Leaf. 2. German Raisin. 3. Golden 

 Queen. 4. Favorite. 5, Jaune Grosse Lisse. 6. 

 Mansfield Tree. 



These represent widely different varieties. The 

 Potato Leaf has very large Mikado -like leaves and 

 purple fruit. The German Raisin is the same as 

 Currant, and belongs to the species Lycopersicnm 

 pimpinellifoliiim. Golden Queen and Jaune Grosse 

 Lisse are yellow, Favorite red, and Mansfield purple. 

 Several fruits were saved from each variety, and this 

 year (1891) a few plants were grown from them. 

 The following record shows what took place : 



1. Potato Leaf. — Fourteen plants. Thirteen typi- 

 cal Potato Leaf, but one hybridized by German 



