538 EXPERIMENT STATION EECOED. 



ears, the mean value of the correlation is O.SIO in 1909 ... In weight and rows 

 of kernels, we have values from 0.178 to 0.345, in weight and circumference we 

 have values from 0.648 to 0.840." 



In the Illinois corn of the low protein series crop of 1907, the mechanically 

 selected low protein seed showed values of r for length and circumference rang- 

 ing from 0.203±0.021 to 0.462±0.01S. The values of r for length and rowf. 

 were — 0.044±0.024 and +0.007±0.024, those for circumference and rows from 

 0.432±0.018 to 0.454±0.016, those for length and weight 0.781±0.008 and 0.786± 

 0.009, those for rows and weight 0.223±:0.024 and 0.275±0.023, and those for 

 weight and circumference 0.721 ±0.011 and 0.768 ±0.009. The high protein seed 

 crop of 1909 showed values of r for length and circumference ranging from 

 0.344±0.017 to 0.590±0.014, those for length and rows from 0.061±0.026 to 

 0.120±0.027, those for circumference and rov^^s from 0.432 ±0.022 to 0.608 ± 

 0.017, those for length and weight 0.871±0.005 and 0.855±0.006, those for rows 

 and weights 0.345±0.021 and 0.348±0.021, and those for weight and circumfer- 

 ence 0.763±0.009 and 0.771 ±0.009. The low protein seed crop for 1909 showed 

 values of r for length and circumference ranging fi'om 0.409±0.019 to 0.539± 

 0.012, those for length and rows from — 0.044±0.026 to 0.027±0.034, those for 

 circumference and rows from 0.425±0.018 to 0.524±0.020, those for length and 

 weight from O.785±0.O0S to 0.844±0.008, those for weights and rows from 

 0.212±0.029 to 0.229±0.027, and those for weight and circumference from 

 0.64S±0.013 to 0.840±0.007. The correlations among certain characters of 

 high and low protein and high and low oil ears of Illinois corn of the crops of 

 1907, 1908, and 1909 are also stated. 



On the measurement of correlation with special reference to some charac- 

 ters of Indian corn, H. L. Rietz and L. H. ^unn' {Illinois Bta. Bui. lJf8, 

 Ats., pp. S). — This is a popular edition of the above. 



American corn-growing methods in Russia, J. H. Grout {Daily Cons, and 

 Trade Ri)ts. [U. 8.~\, 1911, No. IJf, pp. 216, 217). — The consul gives a progress 

 report of the results of the introduction of American seed and corn-growing 

 methods by L. G. Michael, formerly of the Iowa Experiment Station. Figures 

 cited indicate that Bessarabian soil and rainfall should produce 60 bu. of corn 

 per acre, but that the actual averages are 14.9 bu. on peasant farms and 18 bu. 

 on large estates. 



Standard types of Rhodesian maize and their points, H. G. Mundy {Rhode- 

 sia Agr. Jour., 7 {1910), No. 6, pp. I!i81-U86, pis. 2).— The author gives the 

 measurements and weights of Hickory King, Salisbury White, Boone County, 

 and Golden Eagle corn as exhibited at the shows, suggests the weight of ear, 

 kernel, and cob likely to give the best yield of grain per ear, and gives a 

 score card. 



Chou Moellier, A. J. Finn (Agr. Gaz. N. 8. Wales, 21 {1910), No. 9, pp. 793, 

 79Jt, fig. 1; ahs. in Natal Agr. Jour., 15 {1910), No. 5, p. 6.'/7).— Chou Moellier 

 sown in drills June 16, 1909, stood 5 ft. high and was still growing, in spite of 

 a very dry season, a year later. The area harvested yielded 27 tons 17 cwt. of 

 foliage in addition to 38 tons 18 cwt. of stems per acre. The stems were eaten 

 only by pigs, but all stock relished the foliage. The younger leaves could be 

 used as a vegetable. No special qualification aside from quantity of feed 

 recommends Chou Moellier above Thousand-headed kale. 



The. root development of cotton plants in different soils, H. A. Tempany 

 {West Indian Bui., 11 {1910), No. 1, pp. 68-71). — The author presents in tabu- 

 lar form the length of the tap root, maximum spread of lateral roots, circum- 

 ference of the stem at the soil surface, and the total number of main lateral 

 roots of Sea Island cotton grown iu various soils. 



