约翰·贝特《自然与艺术的奥秘》The Mysteryes of Nature and Art by John Bate

How to make a fire sword.

You must make a sword of woode, having a deepe channell in the backe of it, wherein place first a Rocket for the ground; then two or three serpents upright; (with their mouthes inward) let the stoupell that primeth the Rocket come under the mouth of the serpents, so that being kindled, it may set them on fire, and enter the breech of the next rocket, so fill the channell quite full with rockets and serpents, binde the rockets fast into the channell, but the serpents must be placed so, that being once fired, they may fly out of the channell, and it is made: mark the figure G, P.

Deepl机翻

如何制作火剑。 你必须用木头做一把剑，在它的后面有一个很深的通道，在那里先放一个火箭在地上，然后放两到三条直立的蛇。(嘴向内），让引燃火箭的柱子来到大蛇的嘴下，以便点燃它们，并进入下一个火箭的后膛，这样就把火箭和大蛇装得满满的，把火箭牢牢地塞进罐子里，但大蛇必须被放置好，以便一旦发射，它们就会飞出罐子，这样就做成了。记下图中的G、P。