In this book he mentions the possibilities of using hashish for treatment of the plague and typhoid fever.
This belief was based on his observance that Egyptians who indulged in hashish seemed to be less susceptible to diseases that affected Europeans.
Aubert-Roche was not the first 19th century physician to mention the medical possibilities of cannabis-based drugs.
In 1839, William Brooke O'Shaughnessy (1809-1889) of the British East India Company published a treatise called On the Preparation of the Indian Hemp or Gunja, Transactions of the Medical and Physical Society of Bengal.