Nature-Study Agriculture 



W. T. Sklllinj 



FIGS. 77 and 78. Squash flowers : Fig. 77 (left), two flowers with fruit and one 

 with pollen only; Fig. 78 (right), flowers with corollas removed. Flower at 

 left has pollen only. Flower at right has stigma, but no pollen. 



Origin of The importation of desirable plants. The United 

 ^gtonnavel States -Department of Agriculture is continually testing 

 orange new plants brought from other countries. The navel 

 orange is one of the most valuable fruits that it has 

 imported. In 1870 an agent of the Department of 

 Agriculture brought from Brazil some little orange 

 trees of a variety much liked in that country. These 

 were taken to a greenhouse in Washington, where they 

 were multiplied by budding on orange seedlings. Two 

 budded trees thus secured were in 1873 sent to Mrs. 

 Tibbets, at Riverside, California. As socn as these 

 trees bore fruit, the California orange growers saw that 

 they were finer than any variety then grown, and they 

 at once began to take buds from them to graft into 

 their seedlings. These grafted trees, of course, bore 



