NATURAL MAisuaEs. These include all manu rial substances derived from natural sources without undergoing any specific treatment or process of manufacture, such as animal excreta and all animal and vegetable refuse of the farm, as well as various factory wastes. The natural manures are, as a rule, bulky in character and contain small amounts of the essential constitu ents. The most important and useful of the natural manures is farmyard or barnyard ma nure. Its quality, which is very variable, depends upon the care taken in its preservation, the kind and age of the animal producing it, the quantity and quality of the food used, nature and amount of the litter added. Experiments conducted at the Agricultural Experiment Station of Cornell University furnish the data on following page regarding the amount and value of the manure produced by different farm animals under ordi nary conditions of liberal feeding'.
Mature animals. neither gaining nor losing weight, excrete practically all of the fertilizing constituents consumed in the food. Growing ani mals and milch cows excrete from 50 to 75 per cent. of the fertilizing constituents of the food; fattening or working animals from 90 to 95 per cent. Roberts states that the value of the manure produced by animals is from 30 to 50 per cent. of the food they consume. As regards t krtittung xa111....t • qt. -I v.eigl t: of manure in Its r 1.11 It loll. tarn • 111111d- I stall I t e • .l lost in.) • r b r • poult sl I). pig., horse., • IA.. wetoire is the ric of the am 11 kl 11t au— It eorsists of a wixture, in 1/1.'W hat cone,/ trited loon I, h solid tun st ma! 11d It 1111.1 111iiauv excreta. The 11 11.1 ! • x letun of lulu at in al. is tie nnist yak'. al.1.• p irt 11t t e n u ure. lent: especially rich 171 It at ?I I pun i oor in phosphoric acid. --s1 eel. in it lire is In. r ind Ilene., richer in fer tilini.g ItIlt !It. than pi:. I or 1...1%t' 111.11 PI.: I .1,1111rt• -wain. a.. n tick stater w-nure an I more than horse manure, but is rich. r III IlanIIIi• rse 1...1.111,1rt• is a ci tit( ly dry 1 fermi tits rapidly. For thisit it Is called a 'le t' uteri tire and i: est.), ‘aluable for use in hotbeds and for f• rein early crops. 'ow manor,. is a wet 'cold'
V1h1 It f•rinetits slowly. It. low per centazef fertilizing tistittu nits is due to it: re. stage • f water The of fer tiluin •!Ink t.t. in Ininial manure stand in direct relati •t1 t• tin se in the fo. re:Anti tl e tale. of the m Inure pr. diced the 01 11,•,•11 tr stuff, such a• pit-at scrap r Ai, It di -al. 111 seed ine Id. gluten 1....al.
an I wi e it br tn. .tau I tirst leg111111111.11.; 1t r. ...von gr 1•••••• third :at:, cern, etc.) fourth; and r t . r ps. s.1.-1 es turnip and !min g. 1 %tst I I f -14 i. • :ice watery and po. r manure.
11 ith 1 ig•i f••t era is les. compli ti• dige
Inv its kept in 11I 1 'art. rs pr• ligest ti • in tti fll.•••• it'. Ile11, 1.• • rer r • n Pant ir.111 I /dlr. r.11.11IV I.t ri• r••ti frum t• III f 1 I. rt •tit It WTI, which 1..-• gli•-• a. s--rir. is • ropt..1. 21 ‘.• r •111 g tab I 'I r ipi 'Iv reds ••• t' •t - I• f iinpr I. .1 II II ire 1:1 h. rt. re ) t• • xi. rot- It- .t it \ y ,„ 1 i.h I II Ire • 'Nf in 1 • si, f fr. 11t 2 t t. th I -t fr t i t, to C•2 p. r I,nt of it: ,v six - 1n1 ...‘‘ 11itnore tIl li.r t i • 1, ix, I •in I r IT p -t..1 1.. Inure 1 -st illy 0 per ci t.t The I. s. fr 11i di structix ter r It it. la ty tv 1). 1 • r • ly rrvi nted 1v ale use of props r al's( rbents (litter) and preservative:, s ich as supert In sphate. kainit. etc.: but the n oat perfect preservation is secured by storing the in ixed manure of different animals under cover or in pits, keeping it moist and compact to exclude air. Extrenn: of temperature and moisture should be ay.. ided to prevent lire fanging' and to secure a uniform, moderate, and harwles• fermentation. Such fermentation, in fact. in•pri, vex the quality of pc- r, coarse manure, by rendering its more available a. plant food.