Between 1270 and 1280, Hasan al-Rammah wrote al-furusiyyah wa al-manasib al-harbiyya (The Book of Military Horsemanship and Ingenious War Devices), which included 107 gunpowder recipes, 22 of which are for rockets.[9] According to Ahmad Y Hassan, al-Rammah's recipes were more explosive than rockets used in China at the time.[10][11][12] The terminology used by al-Rammah indicated a Chinese origin for the gunpowder weapons he wrote about, such as rockets and fire lances.[13] Ibn al-Baytar, an Arab from Spain who had immigrated to Egypt, gave the name "snow of China" (Arabic: ثلج الصين‎‎ thalj al-ṣīn) to describe saltpetre. Al-Baytar died in 1248.[14][15] The earlier Arab historians call saltpeter "Chinese snow" and " Chinese salt;"[16][17] The Arabs also used the name "Chinese arrows" to refer to rockets.[18][19][20][21][22][23][24] The Arabs attached "Chinese" to various names for gunpowder related objects. "Chinese flowers" was the name for fireworks, while "Chinese Snow" was given to saltpeter and "Chinese arrows" to rockets.[13] While saltpeter was called "Chinese Snow" by Arabs, it was called "Chinese salt" (Persian: نمک چینی‎‎ namak-i čīnī) by the Iranians,[25][26][27][28][29] or "salt from the Chinese marshes" (namak shūra chīnī Persian: نمک شوره چيني‎‎).[30][31]