As soon as the Oxus and Charjui have been left behind only two stations remain before the frontier of the Trans-Caspian province is reached. One of these two places, Barkhani, a small station of the fifth class, serves, with Charjui and Farab, for the experimental production of desert shrubs. Between the Amu Daria and Barkhani the spreading vegetation, which changes the banks of the Amu Daria into verdant slopes, gives place to the Black Sands of Bokhara, the famous Kara Kum Desert. Six versts beyond the second place, Karaul Kuyu, the line crosses the Trans-Caspian frontier, proceeding through the heart of the Kara Kum. The first station in the desert is Repetek, where there is a small depôt and workshops for a permanent staff of ten men. The water here, as well as for the next two stations, is brought from the Amu Daria at Charjui or from the Murghab at Merv, according to the direction in which the train may be travelling. From Repetek the line enters the Merv district. Passing Pesski, Uch Adja and Ravnina, the first and last of which belong to the fourth degree and the remaining one to the third degree of stations, the line runs into Annenkovo, named after the famous constructor of the Trans-Caspian railway, General Annenkoff. The station itself lies in a hollow and 4 versts before the train reaches it there begins that wonderful growth which Nature herself has supplied to resist the encroachment of the Black Sands. It is here that the desert shrub saxaoul, with its long penetrating roots--the great stand-by of the Russians in their fight against the sand--is encountered in its native state. Although special nurseries have been established at many stations for the cultivation of this shrub, the railway authorities employ its roots for firewood, encouraging the Tekkes in the surrounding districts to bring it into the yards. As instances of the destruction with which this plant is assailed nearly 46,000 poods of saxaoul root are supplied annually to the railway authorities by the Tekkes at Ravnina, while 170,000 poods are brought to the authorities at Annenkovo by the Tekke gatherers in that part, the activities of these people creating a very serious prospect since the artificial cultivation of the shrub in the nurseries does not keep pace with its disappearance in the veldt. [Illustration: MOSQUE AT BAIRAM ALI]