f>22 



EXPERIMENT STATION RECORD. 



antimony sulphid 2 parts. The author also quotes a method of destroying wood- 

 chucks by exploding cartridges of common blasting powder or dynamite in the 

 burrows. 



The determination and regulation of sex, Schiller (Milch Ztg., 27 {1897), No. 

 37, pp. 580-582). — The author summarizes some of the principal investigations on the 

 determination of sex in animals and compares it with recent work with men along 

 the same lines. 



Microtechnique of animal morphology ; a critical description of microscop- 

 ical experimental methods, Apathy {Die Mikrotechnik der tierischen Morphologic 

 Eine kritische Darstellung der mikrokopischen Untersuchungsmethoden. Braunschweig: 

 II. Bruhn, 1896, pt. l,pp. 320, figs. 10; rev. in Cental. Bald. it. Par., 1. AM., 24 (1898), 

 Xo. 2-3, pp. 100, 101). 



On a green leucocytosis in oysters associated with the presence of copper 

 in the Leucocytes, R. Boyce and W. A. Herdman (Proc. Bog. Soc. [London'], 62 

 (1S97), No. 379, pp. 30-38). — The authors report a number of experiments. Copper 

 was found in green oysters in much larger quantity than in white oysters. 



METEOROLOGY. 



Report of the meteorologist, W. H. Bishop {Delaware Sta. Rpt. 

 1897, pp. 214-229). — Monthly summaries of observations at G different 

 places in Delaware on temperature, atmospheric pressure, and precipi- 

 tation during the year ending June 30, 1897 ? and a summary of obser- 

 vations on temperature and precipitation during the calendar year 

 1800 are given and the data briefly discussed. 



The summary for 180G is as follows : 



Annual summary of meteorological observations in Delaware. 



No. days 

 on which 



Locality. - r £™j£ n _ 0.01 hi. or 



more of 

 rain fell. 



Newark 



Middletowu 



Dover 



Milford ... 



Seaford 



Millsboro... 



Inches. 

 31.13 



36.55 

 41.85 

 46.48 

 47.98 

 44.74 



93 



111 



Rainfall of the crop season, A. J. Henry ( U. 8. Dept. Agr. Year- 

 book 1897, pp. 607-618, charts 5). — Tables and charts show the monthly 

 and seasonal averages of rainfall, April to September, of the different 

 States and Territories; the averages and least rainfall of the region 

 east of the one hundredth meridian; variations in rainfall; and date 

 of appearance of first and last killing frost. The data are briefly 

 discussed. 



The mean annual rainfall of the globe, R. DeC. Ward (Science, n. ser., 8 (1S98), 

 No. 198, pp. 507, 50S). — This article briefly discusses Loomis and Supan's rainfall 

 maps, Symon's report on " British rainfall in 1897," Todd's report on "Rainfall in 

 South Australia and the Northern Territory, and that portion of the bibliographical 

 number (for 1897) of Ann ales de Geographie which contains notes on climatology and 

 meteorology. 



Meteorology in Denmark, 1896-97, V. Willaume-Jaxt/.en (Tidsslcr. Landokon., 

 17 (1S98), No. 1-2, pp. 88-101). 



