6 DEPARTMENT OF AGRICULTURE BULS. 926-950. 



Department Bulletin No. !)44. — The Alcohol Test as a Means of DE- 

 TERMINING QUALITY OF MlLK FOR CONDENSERIES : Page. 



Review of previous work 1 



Test methods used 2 



Experiments at Grove City creamery 4 



Comparison of acidity and alcohol tests of milk for condensing 4 



Relative value of acidity and alcohol tests 8 



Experiments at condenseries 9 



< "(inclusions 13 



List of references 13 



Department Bulletin No. 945. — The Influence of Calcium and Phos- 

 phorus in the Feed on the Milk Yield of Dairy Cows : 



Dairy practices at the Government farm at Beltsville 1 



Standard rations insufficient for optimum milk yield 3 



Nature of the deficiency in the routine rations fed at Beltsville 5 



Discussion of results 9 



Summary 12 



Description of experiments, protocols, and tables 13 



Effects, on milk yield, of liberal feeding during dry period 13 



Effects, on milk yield, of feeding phosphate with alternated ra- 

 tions during dry period 14 



Rations given animals before calving 18 



Condensed history of experimental animals 20 



Effects of phosphate feeding on body weight 23 



Quantitative results 24 



Grain mixtures used in experiments 25 



Account of unsuccessful and incomplete experiments 26 



Literature cited 27 



Department Bulletin No. 946. — Comparative Spinning Tests of Meade 

 and Sea Island Cottons : 



Introduction 1 



Purpose of the spinning tests 2 



Grade and staple of cotton 2 



Mechanical conditions 3 



Percentages of waste . 3 



Breaking strength of yarn 4 



Summary ! 5 



Department Bulletin No. 047. — Western Sneezeweed (Helenium 

 hoopesii) as a Poisonous Plant: 



Introduction 1 



Historical summary 1 



Description of the plant 3 



Experimental work 6 



Feeding experiments with sheep 11 



Feeding experiments with cattle 15 



Chemical examinataion of the plant 17 



L T rine examination 23 



Discussion and general conclusions 24 



Symptoms 24 



Autopsy findings , 27 



Microscopic pathology of H. hoopesii poisoning 27 



Toxic dose for sheep 30 



Toxic dose for cattle 30 



Acute cases 31 



Toxicity of leaves of plant 32 



Toxicity of flowers 34 



Toxicity of stem leaves 34 



Comparative toxicity of different parts of the plant 34 



Effect of drying on toxicity of leaves 35 



Seasonal variation in toxicity of the plant 36 



Permanent effect produced by the poison 37 



Remedies 38 



Treatment of plant on the range 39 



Practical suggestions for stockmen on the range 44 



Summary 45 



Literature cited 46 



