718 



l>ounil of digestiViIe mattor eaten, both cows prodnrorl less milk solids aii<l milk 

 fat ami one cow itrofluced less total milk on tbe silajje ration tlian on the foddi i 

 ration. The greater etficienry of the ilry matt«'r of the silape ration was dne to tin 

 jp-eater digestibility of the silage. The ;;reater yield of total milk per pound of 

 di<restiblc matter of the silage ration was due to the fact that the milk was more 

 watery. 



As regards the effect on the live weight, iu Hepsie's case the silage ration jim- 

 duced a gain in live weight as comi>ared with a loss on the fodder ration. In Dur- 

 ham's case the silage ration resulted in a loss of weight as comjjared Avith practi- 

 cally no loss on tbe fodder rati<m. 



In view of the uncertainty attending the determination of the real gain of live 

 weight and of the comi»aratiMly small differences oliserved, as w^ll as of the fact 

 that the difference is in the one case in favor of the fodder ration and in tbe other of 

 the silage ration, we are. I believe, Juslitied in drawing the general ctmclusion that 

 the experiment failed to show any material advantage on the side of either the 

 silage ration or tbe fodder ration. wImji silage and fodder were fed in corresponding 

 fjuantities. otlier than that arising from a slightly greater digestibility of thesilau' 

 as compared with tbe ])oorly cured corn fodiler used. 



The comparison of corn sila^'O and roots lor milcli cows was niadr on 

 two cows, a full blood Jersey and a erossl»red (iuernsey .Icrs«'y, botli 

 new in milk. JJoth animals were f«'d a constant jrrain ration of 3 

 ponnds of wlieat bran and 2 pounds of cotton seed meal daily, tofjetlier 

 witli hay. In adib'tion to tliis the cows were "[iven silaj^e mi libitum 

 (about l'> ]»oniids) fiom I'ebniary 10 to March S, and from Man-h 8 to 

 IVIarch !!► an amount (»f roots (sii^ar beets, manjrel-wurzels, or ruta- 

 bagas) furnishin;; an amount of dry matter equivalent to that in flu' 

 siIao(\ was substituted for the silai^c. The data obtained are tabulated, 

 and the lliutuations in live weiiiht aic illustrated by a diaj^ram. 



On account of the short time roots were fed and tlie several kinds used, it is 

 iuii>ossible to draw any final conclusions from tbe work. The results are published 

 as being of much iuterest and as suggestive uf the need of making similar trials 

 nn<ler more advantageous circumst.incis. The conclusions drawn from Ibis one 

 trial are as follows: 



(1) The live weight of tbe cows did not mat<iially change, luil there was a decided 

 variati<m in the amount of food eaten ilaily when the two were on silage. 



(2) More ami richer milk was obtained from both animals' while roots were fed, 

 hut at the same tiuie a larger amount of digestible food was eaten. 



(3) It took from 0.2 to O.S.S pound more digestible matter to produce 1 pound of 

 milk sidids, and from O.OCtS to I.IU pounds more to produce 1 pound of milk fat dur- 

 ing the ]»eriod when roots were fed than iu the periods when silnge was fed. 



Yield o/fotnl i>rr iirrr {\^^. llS-li,'3). — The yield is given of foodingi«> 

 dients in lUirrill ami W hit man <orn per acre; los.ses in ])resorvatioii; 

 a c<»mi»arison olllie yields of tbod ingredients in corn ami in bay; and 

 remarks on the inllueuce of varii'ty and of maturity, ami on the rational 

 use of corn. "A good average corn eioji has ]irodueed with us from 

 one and one thiid to two and (»m' quarter tinu's as much tbod per a<'re 

 as a good hay croji. or enough to sui)i)ort a cow in full flow of milk from 

 168 to 287 days." 



CiENElIAL FEKTILIZKR EXTEUIMENTS, W. II. CALDWELL, P.. S. (pp. 



124.-143). — This is a report of progress in a series of rotation experiments 



