468 



Rale of (jrowih of corn day and nUjhi (in thousatnUhs of a foot). 



Date. 



Honrly 



rat«', 



daj (9.5 



hours). 



Honrly 

 rate, 

 night 

 (14.5 



hours). 



Maximum 

 tempera- 

 ture. 



Minimum 

 tempera- 

 ture. 



July 5 

 



8 

 9 

 10 

 II 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 Mean. 



11.78 

 15.37 

 16.63 

 18.46 

 20.21 

 14.01 

 14.95 

 15. 37 

 16.63 

 19.79 

 8.32 

 13. ."iS 

 16.63 

 15.79 

 13.16 

 18.00 

 11.37 

 17.05 

 13.16 

 8.74 

 7.90 

 12.31 

 18.46 

 14.68 



8.07 

 12.96 

 14.96 

 13.79 

 20.68 

 19.79 

 12.34 

 15.24 

 16.69 

 15.52 



7.45 

 10.07 

 16.07 

 18.62 

 16.69 

 10.90 

 13. 52 

 12.34 

 13.24 



8.62 



8.62 

 11.52 

 14.96 

 13.62 



Degrees F. 



77 



80 



86 



87 



89.5 



90 



85 



85 



81.5 



84 



71 



75 



81 



81 



80 



83 



79.5 



83 



79 



76 



79 



70 



80 



81 



Degree* F. 

 52 

 57 

 63 

 64 

 65 

 66 

 57 

 60 

 63 

 57 

 50 

 56 

 57 

 67.5 

 66 

 ' 59 

 56 

 60 



.•iS.S 

 48.5 

 52 

 63 

 63 

 59 



The means for daily and nightly growth show that about three fifths of the 

 total growth during 24 hours takes place from 5 p. m. to 7 .'M) a. m. — during a period 

 that receives some sunshine, it is true, but for only a few hours and of tiie least 

 intensity. When these rates are reduced to the rate per hour during the two jH-riiMls, 

 it is observed that the rate by day is really a little greater than that by night 

 under the climatic conditions prevailing this season. While this fact may be in part 

 explained by a slov responsiveness on the part of corn to the influence of light — a 

 point up(m which the writer has found no data recorded — we must find its chief 

 explanation in the predominant intluence of the heat factor. 



Pennsylvania Station, Bulletin No. 17, October, 1891 (pp. 19). 



The VALIE OF cotton seed meal as CUMPAKEI) WITH WHEAT 

 BRAN FOR THE PRODUCTION OF BUTTER, T. F. HUNT, B. S. — FOF the 

 jmipose of stiulyinp: this question t\velv«' cows were divided into two 

 lots, each lot containinj,^ three Guernseys, one Jersey, one Ayrshire, and 

 one Shorthorn, mostly jLjrades, and in different stajres of the milking 

 l)eriod. During three ])erio<ls, tlie first two of which histed 4 weeks 

 and the third L' weeks, they received tlie following grain rations ])er 

 animal: Lot 1, 4 imundscorn meal and 6 pounds luaii throughout the 

 e.\i»ciiinent; lot 2, 4 pounds corn meal. 2 to (\ i)ounds cottonseed 

 lucal, and a decreasing amount of bran in the first ]>eriod; 4 p<>und.s 

 corn meal and (> jjounds cotton .seed meal in the second i)eriod; and the 

 same ration as lut 1 in the third period. Both lots received the same 

 amount per head of hay and silage, green rye, or timothy and clovi'r, 

 and corn stover Of/ libition. 



The foo<l consumed and tlu' milk and butter fat i)roduced by each lot 

 are tabulated. 



