In the article it was spoken about the expenses and incomes of the state treasury of Khiva khanate during the certain period where there was informed data concerning taxation resulted in the works and notes of Russian and European travelers and the researchers who visited the khanate during the different period.

The article deals with the scientific expedition of Khorezm oasis, organized in 1925 under the leadership of academician N. Vavilov. It is noticeable that Khorezm is a historical agrarian country, which has a high agricultural culture. The researcher N. Vavilov, studying the numerous materials gathered by the participants of the expedition, has brought more than 80 types of agricultural plants of Khorezm oasis, besides there were described characteristics of some plants.