Chapuis, p.5 Google Book Quote: "Two years later, in 1847, Lefebvre was again captured when he returned to Vietnam. This time Cecille sent captain Lapierre to Da Nang. Whether Lapierre was aware or not that Lefebvre had already been freed and on his way back to Singapore, the French first dismantled masts of some Vietnamese ships. Later on April 14, 1847, in only one hour, the French sank the last five bronze-plated vessels in the bay of Da Nang.
Religion Under Socialism in China by Zhufeng Luo, Chu-feng Lo, Luo Zhufeng p.42: "France started the second Opium War under the pretext of the "Father Chapdelaine Incident." [3]
A History of Christian Missions in China p.273
by Kenneth Scott Latourette: "A casus belli was found in an unfortunate incident which had occurred before the Arrow affair, the judicial murder of a French priest, Auguste Chapdelaine" [4]
