transformation of albuminoids into amid compounds takes place to a lesser extent in 

 tropical climates. An abnormally high percentage of total nitrogen was generally 

 due to a large quantity of amid nitrogen. The tobacco grown on this plantation 

 graded high in quality. 



In studying the total quantity of calcium, magnesium, potassium, and sodium in 

 the ash of tobacco it was found that in 1900 the position of the leaf on the stalk had 

 no significance in this connection, but in 1901 the quantity was greater in the lower 

 than the upper leaves. The average content for the 2 years was about the same. In 

 1900 the fertilizers applied exerted no influence, while in 1901 the quantity of the 

 inorganic bases was increased somewhat by the use of phosphoric acid and potash. 

 It did not appear that the total quantity of these bases is dependent upon variety 

 and climate alone, the average for the entire plant being independent of weather 

 conditions and, to a small extent, dependent upon fertilization. In the author's 

 opinion a comparison of his own results and those of van Bemmelen with the data 

 published by van Bylert seems to indicate that this factor is dependent upon the 

 kind of soil. 



Observations made on the reciprocal substitution of potash and lime indicate that 

 the position of the leaf on the stalk influences its composition, the lower leaves con- 

 taining more potash and the upper ones more lime. Favorable soil moisture condi- 

 tions increased the potash and decreased the lime content. The total quantity of 

 lime and magnesia in the entire plant varied with the potash content. The influence 

 of the fertilizers was readily noticeable only when potash was given. Atterberg's 

 method for the determination of plant food requirements of the soil by means of the 

 analyses of the crops produced was applied in connection with these experiments, 

 but in the opinion of the author the results showed that the rules he has laid down 

 may lead to wrong conclusions with tobacco. 



The storage and germination of wild rice seed, J. W. T. Duvel ( U. S. Dept. 

 Agr., Bur. Plant Indus. Bui. 90, pt. 1, pp. 16, pis. 2). — The distribution, habitat, and 

 germination of the seed of wild rice are discussed; directions for storing the seed, 

 packing it for transportation, and making germination tests are given, and the results 

 of storage experiments reported. 



Wild rice seed gathered as soon as matured, covered with fresh water before fer- 

 mentation had set in, and stored at a temperature of 32° to 34° F., germinated as 

 high as 88 per cent, or fully as good as fresh seed, after being in storage 393 days. 

 Drying the seed, either when fresh or after it is taken from cold storage, destroys its 

 vitality. The best results in germinating this seed were secured by covering it with 

 water and changing the water in the dishes daily. 



The seed germinated well at temperatures ranging from 15° to 30° C, and the 

 experiments so far as carried out show that the maximum temperature of germina- 

 tion is about 35° C, but that better results are obtained at lower temperatures. Work 

 of a similar nature has been previously noted (E. S. R., 15, p. 578). 



Third annual report of the Central Seed-Testing Laboratory of the Ayn- 

 some Agricultural Station, J. S. Remington {Any some Agr. Sta., Seed-Testing Lab. 

 Ann. Bpt., 3 {1904-5), pp. 54, figs. 21).— From September, 1904. to June, 1905, 1,296 

 seed samples were tested, the largest number being clovers, rye grasses, and seeds of 

 root crops. 



In one sample of red clover seed over 200 dodder seeds were found in 1 oz. The 

 average germination for red clover during the season was 93.1 per cent; white clover, 

 83.5; perennial rye grass, 80.8; and Italian rye grass, 82.9. The germination and 

 purity tests of all the samples examined are tabulated. The weed seeds most com- 

 monly found in clover and grass seed samples are enumerated and briefly noted. 



The destruction of dodder, E. Marre {Prog. Agr. et Vit. [Ed. VEst], 26 {1905), 

 Nos. 22, pp. 648-654, pi 1, figs. 4; 23, pp. 684-694, figs. 4; 24, pp. 722-726).— This 

 article, including a botanical study of different species of cuscuta, describes the means 



