296 
conditions. They have been repeated so as to eliminate as far 
as possible the influence of outside factors. 
The first thing attempted was to settle the average quantity 
of salts and their nature, compatible with such and such a 
yield, and that in a sufficiently large number of localities differ- 
ing amongst themselves as to soil, climate, etc., etc. 
Next the causes for certain differences ascertained to exist 
between the north of the Delta and other parts of the country 
were investigated. 
In another set of investigations an attempt was made to 
ascertain exactly how the action of the salts affects the growth 
of the plant and its products. 
These researches are not merely of academic interest. The 
deductions derived from them are very valuable in a country 
like Egypt, where the question of injurious salts is of supreme 
importance from the point of view of the fertility of the soil. 
These data find a direct application in the development of 
the Bararis. 
They have enabled us to discover the reason of the more or 
less complete barrenness of certain districts, and have thus led 
us to a rational method of treatment for such areas. 
Lastly, these results have frequently afforded an explanation 
of certain anomalies observed in many manurial trials. 
The CHairMAN: Je remercie M. Mosseri pour sa contribution 
trés importante et nous sommes stirs qu’elle servira beaucoup 
a mettre en valeur les régions larges et vastes en Egypte, aux- 
quelles Lord Kitchener a référé ce matin. 
[Translation.|—I thank M. Mosseri for this very important 
contribution and we are sure that it will greatly help in 
developing the wide and vast regions in Egypt to which Lord 
Kitchener referred this morning. 
CULTURE, SANS IRRIGATION, DU COTON AU TURKESTAN 
RUSSE. 
Par Boris DE FEDTSCHENKO, 
Principal Botanist, Imperial Botanic Garden of Peter the Great. 
St. Petersburg. 
[No abstract supplied by the author. ] 
The CuHarrman: We are much obliged to M. Fedtschenko 
for his interesting contribution which deals with a question 
of considerable importance for vast regions in other parts 
of the world, chiefly Turkey. In Asia Minor, also, cotton 1s 
grown without irrigation, and in places which have a rather 
