ANIMAL PRODFCTTON. 



865 



wero no v.-iri.-iticuis I'niiii tlit- iinnii.il tli.il cnuld lie (Icfccfod by l;il»ira(iiry mid 

 clinic-al luetLoils ust'd." 



The moisture content of tlic slalilc air was dfteii excessive. 



Tentative eonclnsions wcic <lia\\n fn in llie e.xperinients as follows: 



" Ilisloriral siatenieiits concerninu' liie iinwholesoineness of Itndly crowded 

 and unventilated stables are conceded to be iu tlie main correct as to actual 

 lacts. but the accei)ted explanations may be seriously ((uestioned. 



" When animals confined in unventilated stables are injuriously affected, it 

 is so because of other conditions and causes than those usually acce])ted. 



"The amount of ("0._. itresent in any ordinary stable or aii.v probable lac].: of 

 oxygen is not seriously important. 



"The amoiuit of <'<)j present in the atinos|)liei-e is a \-ery iinrclialile iruide as 

 to hygienic conditions. 



"The mysterious and oft quoted 'organic matter," if harmful, may lie so 

 because it furnishes favoral)le conditions for disease producing bacteria. 



"A well-lighted stable with jioor ventilation is superior from a sanitary stand- 

 point to a well ventilated Imt poorly lighted one. since the injury, if any tliere be. 

 apparentl.v comes from disease producing bacteria and various other causes 

 lather than from liarmful gases. 



"The ventilation i)lans for a stable need not lie made with any special con- 

 sideration for ('(\.." 



The rational feeding of farm animals, A. Carre {Jour. fioc. Cent. Agr. 

 Uauie-fiaroiuic. Hi (Umd). \'). 112. ini. .^N7-.?.'/.> ). — Various ([uestions connected 

 with feeding farm animals are discussed, methods of calculating rations are 

 explained, and otlier data of a similar natuie are summarized. 



Feeding whole grain, R. S. Shaw and II. W. Norton. .Ir. (.]! icli if/an ,S7a. Bui. 

 ?.Ji2, pp. .',0-67). — The purpose of the experiments reported was to determine the 

 percentage of wliole grain passing through the digestive tract and to ascertain 

 if any changes take place in the composition of the grain. No effort was made 

 to compare the feeding value of whole grain and ground grain. 



Tlie tests were made with (! cows, (i yearling lieifers. and i; (l-montlis-old 

 calves, and lasted ."> weeks. Corn. oats, and a mixture of corn and oats were 

 fed to each animal at different times. 



The results are smnmarized as follows: 



I'rdporlioii of irniiiis iutcii rccorcrctJ irholr in tlie feces — E-rperimeiUs \rith 



cattle. 



"Chemical analyses showed jiractically the same compositioii of grain as 

 before feeding, therefore it is safe to conclude that the animal derives no benefit 

 from grain which passes through the digestive tract unmasticated. 



"The germinating jiower of tiie grain i)assing through the system was affected 

 very markedly, but not entirely destroyed, as 4.:^ per cent of the corn and lO.ti 

 per cent of the oats germinated al'tci- this ti-eatnient." 



Cattle feeding experiments, .J. .V. Craig and F. R. Marshall {Texas Sta. 

 lUtl. S(i. lip. 2.1 fi!/x. }(i). — In the first of the experiments reported on the value of 

 mohisses for fattening cattle a lot of «; steers fed on an average a daily ration 

 of 14 lbs. of cotton-seed meal and corn chop 1 : 2 and 12.5 lbs. of cotton-seed hulls 



