46 
remaining plats hardwoods and conifers are mixed. In all the plats 
it will be noted that each permanent tree is entirely surrounded by 
nurses. When the nurses are removed, the plat will show an alterna- 
tion of comparatively light-demanding with shade-enduring kinds. 
It must be understood that the shade endurance of different species 
is relative. For instance, in Plat A, the trees aside from Artemisia 
stand as indicated in the accompanying diagram: 
OS) he re 
Sele elDy = ts) 
1 1B) gS) IE 
Ee Seba 
ae ee Ties 
Oak and Pine require most light, Elm less than these, and Spruce least 
of the four; and the two light-demanding species are separated by the 
more shade-enduring forms. 
It is well to introduce a few slow-maturing species, such as Oak, 
Black Walnut, Hickory, ete., in plantings where the soil is adapted to 
them, and by placing them at wide intervals the general development 
of the grove will not be affected by their slower growth. While it is 
true that the Black Walnut is a rapid-growing tree, it does not attain 
its full value until very old, as compared with Elm, Catalpa, Locust, ete. 
Measurements of growth. © 
The following measurements of the growth of trees set in 1896 and 
1897 will give a general idea of the action of the species named under 
the conditions prevailing at the Kansas station. The measurements of 
trees planted in 1896 give the total growth for two years, while those 
for 1897 give the length of new wood made in that year only—only the 
leading branch being measured. The measurements were taken July 
TSS 7 : 
Growth for 1896 and 1897. 
Species of tree planted. Longest. | Average. 
Trees set spring of 1896. Inches. | Inches. 
Scotch Pine: os... 26 joe S eo eye Bee see baie sale ene eee RE ee se ene ee eee eee eee 20 | 9.3 
Rock Pine; sfhe0 se fack ee a ie ee eee ee ee eee 7 5.2 
DACKIPAN Of ecm cwnna seo -cocsceeRe caer wenaid J iige SRC Ri ee eee ane ee ee eeeee 18 10.5 
NOL WAY SPLUCO oo 5 oasis on ow wate weave ew cle Sees ne oie ee ee le sine ree © eles 10 5 
WouglasiSpruce os fe oe Seren Shee 2 arete Siete ae ere ee eat Oa eee oe reer Uta 4.1 
AST UOIDISLA 2 ote io che cre olen ete eintevsie Sob ice ois Spe ave Cape ON Eee eae ar en 60.5 | 51 
Molipyinee jj st8. es . Sscke so eke ee SV aa eta ee eee eee ee Oe ee eee 24 14.6 
Bor Oak og petiios wie Seon sels Saaaise b's Hee Barats tebe eee Se ee ee ene 10 9.8 
1103 0h 010) Eee eas ae ee CE EES EE a Os ues ho Seda ams auosese we 10 8.5 
scotch Pine (set in grass plat).2.-228- so.saceoee see ene ee eee ee eee eee 28 16.5 
Rock Pine (setinfrass plat)! ss22,. =k eticdeeasee oe ee Seer ee ee eee See ae 4 2.1 
