324 



thiidii stnnn(iriiiiii) , sow-thistle (Soiiclms urrciisiK), sour-dock and yellow dock 

 [N inner ciispi(s), at such time and in such manner as shall prevent their bear- 

 ing seed. Tn like manner shall he or they also destroy any of the above-men- 

 tioned weeds standing or growing as far as the center of the public highways, 

 lands or alleys adjoining the lands owned or controlled by him or them. 



The law ^jrovicles for the appointment of eonnnissioners to destroy 

 the Aveeds on lands neglected by the owners and for the addition of the 

 expenses involved to the taxes levied upon these lands, the object being 

 to prevent the spread of weeds from the lands of negligent owners to 

 those of persons who carefully obey the law. The species of weeds 

 named in the law and six others are described and illustrated in this 

 bulletin, and suggestions made as to the best methods for their 

 eradication. 



BULLETIN No. 21. OCTOBEK. ISSD. 



Co:mparative valie of a\'akm axd cold a\'ater for :mjlch cows in 

 AViNTER, F. H. King (pp. ;V30). — The chief object of the experiments 

 here reported was to ascertain whether it is true, as many farmers 

 believe, that Avarm Avater increases the yield of milk, and if so, 

 Avhether this increase affects the A^olume simply or the Aveight of the 

 solids contained to an extent Avhich Avould make it renunierative in 

 general practice to Avarm the Avater for coavs. 



Six COAVS Avere i)laced in stanchions side by side in tAvo groups of 

 three each, and fed a daily ration of .") pounds of bran mixed Avith 2 

 pounds of ground oats and (i pounds of hay, together Avith Avhat dry 

 cut fodder they Avould eat up clean from January "Jl to !March *25. 

 During this time the coavs in every Avay received similar treatment, 

 exce2)t that Avhen one group of coavs received Avater at 32° F., the other 

 received it at 70° F. The exi)eriu;ent AAa^ divided into three periods 

 of sixteen days each, liaA'ing intervals betAveen them. At the close of 

 the first and second periods the temj^eratures of the Avater were 

 rcA'ersed for each of the coavs in order to eliminate, so far as might b?, 

 the individiuil diff'erences of the tAVo groujis. 



Details are given in a niunber of tables and described at consider- 

 able length. A more complete record of this experiment may be 

 found in the sixth annual report of this Station for 1889. 



The following summary of results '•' for these six coavs Avhile under 

 experiment *' is taken from the bulletin : 



(1) While on Avarm Avater they gaA'e on the aAerage 1.002 pounds of 

 milk per coav per day more than Avliile on cold Avatcr, or (5.23 per cent 

 of the general aA^erage daily yield of 16.0G pounds. 



(2) The}" drank on the aA^erage, daily. Avhile on cold Avater, 63 

 pounds, but Avhile on warm, 73 pounds, or 10 jiounds more per cow. 



(3) They ate more Avhile on Avarm Avater than Avhile on cold, and 

 at the rate of 0.74 pound of coi-n fodder per coav yev day. 



(4) An increase in the amount of w^ater drunk Avas coinculent with 

 an increase in the quantity of milk given, and this Avas true irre- 



