350 
experiment stations, with the assistance of F. W. Howe in 
the corn bulletin. They are manuals for teachers and not 
textbook for pupils. At a glance it is judged that they are 
thoroughly practical. Both of the works should be of great 
value in such institutions as Lahainaluna, Hilo Boarding and 
Boys’ Industrial Schools in this Territory, or, indeed, in any 
of our rural schools, especially as their subject-matter may 
be studied in connection with arithmetic, botany and other 
school subjects. 
The Journal of the x\ssociation of German Engineers states 
that the development of the last ten years points to the fact 
that, in the near future, ammonia will chiefly be used as an 
artificial fertilizer. Statistics show that Germany consumes 
its entire yearly production of 322,700 tons at honie. Eng- 
land produces 348,000 tons, while the United States, in spite 
of its extensive use of coke as fuel, produces only 9000 tons. 
SHIELD-BUDDIXG THE MANGO. 
(From the Rural Xew Yorker.) 
Shield-budding of the mango has been with partial success 
practiced in Florida for at least six years by experimenters in 
the propagation of this fruit ; the writer first experimented with 
this method with some success in 1904. The percentage of suc- 
cessful buds was, however, so low that he did not then feel justi- 
lied in calling this method to the attention of the public, and the 
experimental work was temporarily suspended. However, ex- 
perimentation has been continued by a few men interested in the 
problem, in some instances meeting with remarkable success. 
The success achieved by IMr. Orange Pound, Cocoanut Grove, 
Fla., deserves special mention, not only for the difficulties that he 
has successfully surmounted, but for the public-spirited way in 
which he has placed his data at the disposal of the writer for 
publication for the information of other mango-growers. It is 
not too much to say that IMr. Pound’s discovery marks ?m epoch 
in the mango industry, not only in Florida, but in other parts of 
the world. Mr. Pound recently obtained, with this method, over 
85 per cent, of healthy trees among a lot of 300 plants budded, a 
most gratifying result. • 
Success depends on the prime condition of the stock plant and 
that the sap is flowing freely ; the buds should be selected from 
well-matured wood that is still green and smooth, of the first, 
second and third flushes from the terminal bud, and cut rather 
large, three to five centimeter long (one and a quarter to nearly 
two inches). The lower, thick part of the leaf stem at the bud 
