In that year, Lieutenant John Wood of the Indian Navy commanded the first steamboat to paddle up the Indus River and surveyed the river as he went. In 1838, he led an expedition that found one of the River Oxus' sources in central Asia. He published his travels in 1872. In 1837, the Russian envoy Captain Jan Vitkevitch visited Kabul, and the British believed that it was to facilitate some form of diplomatic or military presence in Afghanistan. While in Kabul, he dined with the British envoy, Captain Alexander Burnes, who reported negatively on Russia's intentions. Russia feared British inroads on their commerce in Central Asia, as well as the influence that a Muslim power with British support might have on the other khanates.