HISTORY AND BIBLIOGRAPHY 833 



and the conditions under which germination tests are made, with 

 special reference to work in Kentucky. 



Kentucky now has in consequence of this work an admirable 

 law forbidding adulteration or misbranding of the clovers and 

 timothy sold for seed in the state. Its effects have been most 

 salutary and have been studied with profit by other common- 

 wealths. 



Vermont. — Mr. L. W. Barton, under the direction of Profs. 

 Jones and Orton of the Vermont Experiment Station, made an 

 examination of thirty-four samples of clover seed in Vermont. He 

 reports the total percentage of impurities in red clover as being 

 from .3 to 5.3, with an average of 1.8 per cent; alfalfa as having 

 a maximum of 7.1 per cent and a minimum of .6 per cent. Sorrel 

 was found in 60 per cent of the red clover samples and wild carrot 

 in a few, the rib plantain occurred in 77 per cent, dodder in 5 

 per cent, and Canada thistle in 5 per cent. Dodder did not occur 

 in the alfalfa, but in 8 per cent of the samples Canada thistle 

 was found. 



Massachusetts. — G. E. Stone reports on seed tests made in 1908 

 and 1910. Smith, Chapman, and Stone describe fourteen weed 

 seeds most commonly found in grass seed and cattle foods, with a 

 brief account of the weeds of the state. 



Maryland. — E. I. Oswald made a series of experiments to deter- 

 mine the vitality of seeds when placed in manure under different 

 conditions. It was found that weed seeds when left for six months 

 in manure had lost their vitality completely. When left there for 

 one month under conditions usually followed by dairymen, the 

 seeds of ribgrass, horse nettle, dock, and a few others were still 

 firm. Mention of weed seeds is made in the treatise by J. B. S. 

 Norton on Maryland weeds. The same author gives the result of 

 seed analysis of various commercial seed. 



Nebraska. — E. M. Wilcox in a paper on dodder in alfalfa seed 

 discusses the frequency of the impurities and means of eradicating 

 the weed. 



New Hampshire. — P. W. Taylor in reports of seed tests for 1910 

 and 1911 discusses the New Hampshire law giving results of purity 

 and germination tests. 



New York. — F. C. Stewart under the head of alfalfa troubles 

 discussed dodder in alfalfa seed and subsequently gave a method 

 of screening dodder out of alfalfa seed. In 1910 G. T. French re- 

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