next row. The shoe attachment is shown connected to the
machine, while the wheels are shown separately and discon-
nected behind the machine. The whole contrivance is so simple
that any tomato grower can appreciate it. The boys can do their
work easily from the first. The amount that one is able to plant
in a day depends altogether upon the conditions and the man
running the machine.* If the tomatoes be planted 4x4 feet, six
or eight acres may be planted in a single day on land in good
condition.



 Use of Chemical Analysis.
 A good chemical analysis of any plant makes an index of
 what the plant needs from the soil and air. Now, if we have at
 hand the analysis of our soil, and know what the plant obtains
 from the air, we can compare these with the analysis of the'plant
 and know with some certainty what should be added to the soil
 to grow the plants. Often certain elements are present, but are
 not in the proper combination to be appropriated, and hence may
 be no more available than as though they were not in the soil at
 all. The elements usually wanting in our soil are nitrogen,
 phosphoric acid and potash. Too much of any one element of
 plant food is not only useless but often a direct detriment.t

 AMOUNT OF DIFFERENT ELEMENTS REMOVED FROM SOIL.
 Chemical analysis shows that for every pound of tomato
(N. J. Exp. Sta., B. 63) removed from the ground .00152 pounds
of nitrogen is carried off. Putting the crop of an acre at 200
crates of 60 pounds each, there would be removed from the soil a
little more than 18 pounds of nitrogen. This nitrogen had
to be in some available form for the plant.
 The amount of phosphoric acid in a pound of tomatoes is
.000661, a little more than one half as much by weight as nitro-
gen; or nearly two-thirds of a pound for every thousand pounds
 *The machine'figured is the New Bemis, made by Stoddard Manufacturing Cor
pany, Dayton, Ohio. Prof. B. F. Moodie, President of the Florida Tobacco Growers
Association and President of the National Cigar Leaf Association, of Lake City, Fla.,
is State agent for the machine. Prof, Moodie will set up and put into operation all
planters bought of him.
 tFor a fine discussion on this subject, see B. 2o, Fla. Agr. Exp. Sta., by Prof.
A. A. Persons.