Cummis
[[File:Rubber tree plantation Thailand タイのゴム園 DSC05246.jpg|thumb|upright=0.8|Plantatio Heveae brasiliensis in Thailandia.]]

Cummis vel gummis (aut indeclinabiliter cummi vel gummi) est materia utilis, quae in officinis et industria et in domibus in usu habetur. Plerumque cummes naturales extrahuntur ex arbore, cui nomen est Hevea brasiliensis. Cum cortex arboris secatur, ex ea umor albus latex appellatus manat. Latex collectus ad cummim faciendam adhibetur. Physici modos inter primum bellum mundanum invenerunt quibus cummi artificiosum creetur: ex oleo enim et carbone fit. Hodie duae fere partes omnium cummium artificiosae sunt.

 Gummi deletile
 Gummi manducabile
 Pneumaticum
 Vinculum cummeum

 Notae 

Bibliographia
Ascherson, Neal. 1999. The King Incorporated: Leopold the Second and the Congo. Granta Books. ISBN 9781862072909.
Brydson, J. A. 1988. Rubbery Materials and their Compounds. Springer Netherlands. ISBN 9781851662159.
Hobhouse, Henry. (2003), 2005. Seeds of Wealth: Five Plants That Made Men Rich. Shoemaker & Hoard. ISBN 1593760892.
Hochschild, Adam. 2002. King Leopold's Ghost: A Story of Greed, Terror, and Heroism in Colonial Africa. Pan. ISBN 9780330492331.
Morton, M. 2013. Rubber Technology. Springer Science & Business Media. ISBN 9789401729253.
Petringa, Maria. 2006. Brazzà, A Life for Africa.'' AuthorHouse. ISBN 9781452076058.

Nexus externi 

Fruges
Materies