Yusuf ibn Ismail al-Kutubi
Encyclopedia
Yusuf ibn Ismail al-Kutubi known as Ibn al-Kabir (13th - 14th Centuries AD) an Azerbaijani-Iranian scholar and Physician worked as a doctor in the palaces of the Abbasid
Abbasid
The Abbasid Caliphate or, more simply, the Abbasids , was the third of the Islamic caliphates. It was ruled by the Abbasid dynasty of caliphs, who built their capital in Baghdad after overthrowing the Umayyad caliphate from all but the al-Andalus region....

  caliphs in Baghdad. He was born in Khoy in West Azarbaijan Province
West Azarbaijan Province
West Azerbaijan Province or West Azarbaijan Province , is one of the 31 provinces of Iran. It is located in the North West of the country, bordering Turkey, Iraq and Nakhchivan, and the provinces of East Azerbaijan, Zanjan and Kurdistan....

 or in Azerbaijan
Azerbaijan
Azerbaijan , officially the Republic of Azerbaijan is the largest country in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern Europe, it is bounded by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west, and Iran to...

.

He is known for his comprehensive pharmacology titled "Ma la Yasa'u al-Tabiba Jahlahu" (what a physician cannot afford to ignore), often referred to by its shortened title "Jam al-Baghdadi" (Baghdadi Collection), written in Arabic in 1311. Several thousand medicinal herbs, natural drugs and recipes are identified in the compendium.

He wrote that a bandage with a few drops of castor was good for treating headaches. Beverages containing castor oil and vinegar were used to treat abdominal pain.

In his book he described eight different methods for administering aromatherapy: Use a pillow filled with medicinal plants. Carry a small pouch filled with dried medicinal plants. Inhale the boiling decoctions of medicinal herbs. Inhale the scent of flowers in special gardens. Hang bunches of healing grasses inside the house. Breathe the odor of burned medicinal plants. Use an aromatic ointment. Take an aromatic bath.

According to al-Kutubi barud or potassium nitrate
Potassium nitrate
Potassium nitrate is a chemical compound with the formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−.It occurs as a mineral niter and is a natural solid source of nitrogen. Its common names include saltpetre , from medieval Latin sal petræ: "stone salt" or possibly "Salt...

was called milh al-ha’it (salt of wall) by the common people of Iraq. “It is the salt that creeps on old walls, and they collect it.”

He described saltpeter saying "they use it to make a fire which rises and moves, thus increasing it in lightness and inflammability"
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