232 The Plant World. 



A similar metliod was used in researches upon a wheat 

 rust, against which spraying' with copper mixtures was of 

 no avail. The wheat was planted in pots in protected 

 green-houses of the Botanical Garden. Every day two or 

 three pots were transferred to the fields where the wheat 

 was hadly rusted. As soon as any of the experiuiental 

 plauts showed the contauiination, the date of infection as 

 well as the period of inciibatiou were determined. This 

 method also enabled Professor I'runet to determine that 

 the infection alwavs coincides with rains or heavv fogs. 



As a confirmation of his conclusion, the reverse of the 

 above method was used. Wheat was planted in i)ots in the 

 field, and each day two or three ])ots were removed to the 

 green-houses. The results of the two series of experiments 

 agreed completely. It is hoped that as result of such ex- 

 periments there will be developed a solid basis for vege- 

 table pathology and therapeutics. — 1>. ( \ Guuknberg. 



We are in receipt of the first issue of The Journal of 

 the W'dfiJiiiigtoii Acadvniji of Sciences, a semi-monthly pub- 

 lication devoted to brief articles and to abstracts of work 

 done bv men in the scientific bureaus of the government. 

 The Journal is ai)pa]'ently destined to fill such the same 

 place among physicists and chemists that The Experiment 

 IStalion h'ccord does among botanists and agriculturists. 

 It does not fail, however, to contain much that will interest 

 b(>tanists in its abstracts of work in forestry, meteorology, 

 I^hysiography and paleontoh)gy. In these da.ys we natural- 

 ly crave the journal in which the contributions are short 

 and to the point, and in which the reviews and abstracts 

 are numerous and are discrinunating as well as informing. 



