The quarrel began about the right of the British servants of the Company, under the treaty with Mir Kasim, to carry their commodities through the Bengal provinces free from the payment of all transit duties. The British at Calcutta twisted the privilege of non-payment into a right to carry such native commodities as salt, tobacco, opium, betel, sugar, and oil, without payment; whilst all Bengali dealers were compelled to pay a duty at every station. The British were thus able to undersell native dealers, and monopolise the whole trade of the country. The Nawab protested against this interpretation, and insisted on collecting the duties, unless the goods were bought for exportation by sea. Then ensued quarrels, misunderstandings, frays and reprisals; the Nawab complaining of the loss of duties, whilst the British set him at defiance, and resisted all attempts to collect the duties by force of arms. [Sidenote: Quarrel with Mir Kasim.] Mir Kasim cut away the British monopoly by abolishing all inland transit duties. The Bengali dealers were thus placed on the same footing as the Company's servants. The Company's servants were blind with wrath at this measure. They insisted that they enjoyed a certain privilege under the treaty with Mir Kasim, and that this privilege was rendered valueless, by the general abolition of duties. Accordingly, they proposed sending two of their number to Monghyr to argue the matter with the Nawab. [Sidenote: Fresh exasperations.] The city of Monghyr is situated on the river Ganges, three hundred miles above Calcutta and a hundred miles below Patna. The two British envoys were received and entertained by the Nawab, but told there was nothing to settle; he had ceased to collect duties from his own subjects and the British had nothing to do with the matter. At this very moment a boat arrived at Monghyr on its way to Patna with a cargo of firelocks from Calcutta for the garrison at the British factory. The Nawab at once suspected that the British were preparing for war. He confiscated the firelocks, and kept one of the envoys as a hostage, but permitted the other to return to Calcutta. The latter man was doomed. On his way down the river he was fired upon by the troops of the Nawab, and brutally murdered. [Sidenote: Mir Jafir restored.]