58 EXPERIMENT STATION RECORD. 



Concerning the relation between the absolute Aveight and composition of 

 leguminous seed, W. G.Wallig {Inaug. Disi. Jena, 1S04, i)p. 37; abs. in Hot. Ceuthl. 

 Beihefte, (ISOr,), Xo. 2-P., p. ^:?S). 



Germination tests of Swedish seeds, L. J. VVahlstedt (lijit. Kristianstad Seed 

 Control Station, 1S04-05, pp. 1-i, 14).— X report is given of the tests of aliont 4,000 

 samples of seed tested at the station during the years 1879 to 1895. The principal 

 seed tested were various grains, leguujiuous forage plants, and grasses. — F. w. woll. 



On the examination of grass and clover seed in respect to their purity and 

 the impurities which they contain, F. F. Bruuning (Uj-tr. Archie. Teylor, ser. 2, 5 

 {1SD6), Xo. l,])p. 44, pis. C). 



On the importance of the origin of clover seed {Landmanshlade, 29 {1S9G), pp. 

 71-73). 



On a new germinating apparatus, A. Sempulowski {Deut. landw. Presse, 23 

 (1S96), Xo. 52, p. 462). 



Report of Kristianstad Seed-Control Station, ia94-'95, L. J. Wahlstedt 

 {Kristianstad (Stveden): lS9iJ,pp. 15). 



On the extirpation of hedge mustard {Deut. landw. Presse, 23 {1S96), Xo.42,p. 

 369). 



Weeds on Swedish moorland cvi\taxes,^.'ToiAf {Svensla Mossk. FiJren. Tidslcr., 

 1S95, pp. 329-334). 



"Weeds and how to eradicate them, T. Shaw {St. Paul: Wehh Puh. Co., 1S96, 

 pp. 210, Jigs. 22). — This volume, "which is the outcome of much study and experiment 

 in dealing with weeds, will no doubt he found suggestive to anyone desiring to rid 

 his ground of troublesome weeds. Chapters are devoted to the prevalence of weeds, 

 evils arising from their presence, possibilities of their destruction, agencies of distri- 

 bution and propagation, methods and principles generally applicable to the destruc- 

 tion of weeds, specific suggestions for the destruction of many troublesome weeds, 

 and specific modes for eradicating some of the most serious weed pests of the western 

 prairies, such as the Russian thistle, Hungarian nmstard, penny cress, wild prickly 

 lettuce, foxtail, and wild buckwheat. Most of the weeds are so well known as to be 

 easily identified with the aid of the descriptions given, but unfortunately some of the 

 illustrations are so poorly executed as to be beyond recognition. Tlie use of bare 

 fallow and fermenting manure as means for weed eradication are considered as of 

 doubtful value. The practicability of having a farm clear of weeds if sufficient 

 energy be put into jiiactice in the methods of eradication advised is demonstrated. 



DISEASES OF PLANTS. 



The principal diseases of citrus fruits in Florida, W. T. SwiNaLE 

 ami H. J. Webber ( U. *V. Dept. Agr., Division of Vegetable Physiology 

 and Pathology Bui. 8,2)p. 43, pis. S, Jigs. 6).— TLe authors Lave described 

 and illustrated 6 of the priucipal diseases attacking citrus fruits iu 

 Florida as follows: Blight, die-back or exanthema, scab or verrucosis, 

 sooty mold, foot rot or mal-di-gomma, and melanose. Some of these 

 diseases have been under investigatiou for a number of years, and pre- 

 ventive measures are suggested. 



The bliglit, also called wilt and leaf curl, is, so far as known, con- 

 fined to Florida. Nearly all citrus fruits are liable to its attack, and at 

 present it is considered incurable. All infected trees should be dug 

 up and burned as soon as they show signs of the disease, as it is con- 

 sidered contagious. The annual loss due to this disease is estimated 

 at $150,000. BUght attacks bearing trees 5 or more years old, and its 



