311 



fertilizers i.s valuable in tliat it shows which of the manufaiiturers sell in a 

 mixture at least as niueh of the valuable ingredients as they claim." By 

 ;i eoniparisou of the analyses of the brands of three large linns for the 

 ])ast 5 years it was found that "the composition is practically constant 

 both in regard to proportion and amount of plant food contained," 



Of the -512 brands reported on, the selling i)rice of 2 was below the 

 station's valuation; that of 128, or 60 per cent of the whole, was fioin 

 20 cents to $10 greater than the station's valuation; that of 05, or 31 

 l^er cent, was from $10 to $15 greater; that of 14 was fi-om $15 to $20 

 greater; and that of 2 was more than $20 per ton greater. 



The station's valaiitious ure of great service in the purchase of mixed fertilizers, 

 Avhen used in tonnectiou with the information given by analyses. 



[The diftereiice is i)ointed out between high-graile and low-grade fertilizers.] 

 The advantages to be derived from the use of high-grade fertilizers are, (1) a 

 direct saving in cost per pound of the actual fertilizing ingredients; and (2) a 

 reasonable certainty that the quality of the ingredients is such as to produce their 

 full agricultural etiect. 



New York State Station, Bulletin No 33 (New Series), July, 1891 (pp. 23). 



Fertilizers, P. Collier, Ph. D. (pp. 533-553), — This is a continu- 

 ation of the popular bulletins ]>ublished by the station, and contains an 

 exiilanation of the terms of chenii<;al analysis, remarks on commercial 

 valuation of fertilizers, ii tabulated statement of the composition of 

 various chemical compounds, schedule of trade values of fertilizing 

 ingredients for 1891, and analyses of 30 samples of commercial ferti- 

 lizers collected within the State during 1891. 



New York State Station, Bulletin No. 34 (New Series), August, 1891 (pp. 48) 



Comparison of dairy breeds of cattle with reference to 

 PRODUCTION OF BUTTER, P. COLLIER Ph. D. (pp. 557-002). — This 

 bulletin is a continuation of Bulletins Nos. 18 and 21 of the station (see 

 Experiment Station Eecord, vol. i, p. 209, and vol. ii, p. 213), and is the 

 beginning of the record of milk j)roduction in the test of different breeds, 

 the two i^revious bulletins having been occupied with a descrii)tion of 

 the cows, fluctuations in live weight, amounts of food consumed, etc. 

 The record includes for the first months of the period of lactation 

 of each cow the amount of fat in 100 pounds of milk, and the propor- 

 tion of this occitrring in cream, skim milk, buttermilk, and in the but- 

 ter; data as to the fat recovered and lost; the relations of milk, cream, 

 and butter; the daily yields of milk and of butter; the monthly yields 

 of dairy products; the tempeJiatiu-e and time of churning; and the 

 relative number and size of fat globules. In addition to these data a 

 su n iiiary is given for the cows of each breed, from which the foUo wing- 

 is taken: , 



