In the following years he made four journeys to
Central Asia: • 1870–1873 from
Kyakhta he crossed the
Gobi Desert to
Beijing then explored the upper
Yangtze, and in 1872 crossed into Tibet. He surveyed over , collected and brought back with him 5000 plants, 1000 birds and 3000 insect species, as well as 70 reptiles and the skins of 130 different mammals. The journey provided the General Staff with important intelligence on a
Muslim uprising in the kingdom of
Yaqub Beg in western
China, and his lecture to the Russian Imperial Geographical Society was received with "thunderous applause" from an overflow audience. The Russian newspaper
Golos Prikazchika called the journey "one of the most daring of our time". • 1876–1877 travelling through
East Turkestan through the
Tian Shan, he visited what he believed to be
Qinghai Lake, which had reportedly not been visited by any European since
Marco Polo. The expedition consisted of ten men, twenty-four camels, four horses, three tonnes of baggage and a budget of 25,000
rubles, but the expedition was beset by disease and poor quality camels. In September 1877, the caravan was refurbished with better camels and horses, 72,000 rounds of ammunition and large quantities of
brandy,
tea and
Turkish delight and set out for Lhasa, but did not reach its goal. • 1879–1880 via
Hami and through the Qaidam Basin to Qinghai Lake. The expedition then crossed the Tian Shan into Tibet, proceeding to within of Lhasa before being turned back by Tibetan officials. • 1883–1885 from Kyakhta across the Gobi to Alashan and the eastern Tian Shan mountains, turning back at the Yangze. The expedition then returned to Qinghai Lake and moved westwards to
Hotan and
Issyk Kul. The results of these expanded journeys opened a new era for the study of Central Asian geography as well as studies of the
fauna and
flora of this immense region that were relatively unknown to his Western contemporaries. Among other things, he described
Przewalski's horse and
Przewalski's gazelle, which were both named after him. He also described what was then considered to be a wild population of
Bactrian camel. In the 21st century, the
Wild Bactrian camel was shown to be a separate species from the domestic Bactrian camel. Przhevalsky's writings include five major books written in Russian and two English translations:
Mongolia, the Tangut Country, and the Solitudes of Northern Tibet (1875) and
From Kulja, Across the Tian Shan to Lob-Nor (1879). The
Royal Geographical Society awarded him their
Founder's Medal in 1879 for his work. ==Death and legacy==