约翰·巴罗(John Barrow)《中国旅行记》(Travels in China)插图

 http://www.hellenicaworld.com/China/Literature/JohnBarrow/en/TravelsInChina.html

Sketches of Chinese Artillery.

References.

Fig. 1 Iron four Pounder about 8 feet long at Han cheu Fou 2. Iron four Pounder about 8 feet long at Chong san chien 3. A Field Piece about the Calibre and length of our Wall Piece but of much greater thickness of Metal 4. Half Pounder Field Piece 5. A Platform of Masonry with irregular Pieces about 2 pounders probably for throwing stones. They are thus placed in the open Spaces at the Gate Ways at PEKIN and Ton cheu 6. A Stand for Field Pieces at Cou pe keou

Neele sculp. 352 Strand.

Published May 1st. 1804 by Cadell & Davies Strand