Buffon's "Histoire naturelle, générale et particulière" (1749–1788: in 36 volumes; an additional volume based on his notes appeared in 1789) was originally intended to cover all three "kingdoms" of nature but the "Histoire naturelle" ended up being limited to the animal and mineral kingdoms, and the animals covered were only the birds and quadrupeds. "Written in a brilliant style, this work was read ... by every educated person in Europe". Those who assisted him in the production of this great work included Louis-Jean-Marie Daubenton, Philibert Guéneau de Montbeillard, and Gabriel-Léopold Bexon, along with numerous artists. Buffon's was translated into many different languages, making him one of the most widely read authors of the day, a rival to Montesquieu, Rousseau, and Voltaire.