Carbon, combined with a small quantity of iron, forms a compound called plumbago, or black-lead, of which pencils are made.    From Wordnik.com.  [Conversations on Chemistry, V. 1-2 In Which the Elements of that Science Are Familiarly Explained and Illustrated by Experiments] Reference

Graphite, locally known as plumbago, the only commercial mineral of the country, might be seen in the Palace of Mines and Metallurgy.    From Wordnik.com.  [Final Report of the Louisiana Purchase Exposition Commission] Reference

Tallow, 8 pounds; palm oil, 10 pounds; plumbago, 1 pound.    From Wordnik.com.  [Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889] Reference

The copper is melted first in a plumbago crucible; the tin is added gradually.    From Wordnik.com.  [On Laboratory Arts] Reference

The moonlight glistened with a gleam of plumbago on the great slope of black tiles.    From Wordnik.com.  [The Captain's Doll] Reference

Red hermatite, iron ore, traces of copper, and plumbago are found along the main Bitter Root.    From Wordnik.com.  [The Atlantic Monthly, Volume 17, No. 101, March, 1866] Reference

The sides of the cylinder at the level of the fire box are protected with a lining of plumbago.    From Wordnik.com.  [Scientific American Supplement, No. 623, December 10, 1887] Reference

Later, Thoreau converted the factory to produce plumbago (graphite), used to ink typesetting machines.    From Wordnik.com.  [henry david thoreau | happy birthday, henry! « poetry dispatch & other notes from the underground] Reference

It was fun to take out all the summer stuff, trim back my plumbago, put in a new tree and freshen up my stones.    From Wordnik.com.  [2008 November « Sugar Creek Gardens’ Blog] Reference

Even fresh, natural fruits that have been evenly coated with plumbago may be covered with a thin shell of metal.    From Wordnik.com.  [Steam, Steel and Electricity] Reference

Its "Old World" (that is, old European) name was plumbago which means black lead, a reference to its use in pencils.    From Wordnik.com.  [Graphite] Reference

Prussian blue, indigo, French chalk, or sulphate of lime; black teas may be similarly treated with plumbago or "Dutch pink.".    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

The solarium where he breakfasted was off the dining room, a glass-domed structure where a blue plumbago bloomed all year round.    From Wordnik.com.  [Venom] Reference

The fabric is either treated with some heat-resisting mixture or something that is a lubricant, plumbago and oil being the compound.    From Wordnik.com.  [Scientific American Supplement, No. 841, February 13, 1892] Reference

As the chair whistled along a flowery path with royal palms and plumbago everywhere, the pretty blond girl was starting to smile again.    From Wordnik.com.  [The Season of the Machete]

A few that come to mind — Mertensia virginica Virginia bluebells, Ceratostigma plumbaginoides Perennial plumbago, and this little beauty.    From Wordnik.com.  [Now showing: Veronica ped. ‘Georgia Blue’ « Sugar Creek Gardens’ Blog] Reference

Er de plumbago or de typhoid er de yaller fever sometimes.    From Wordnik.com.  [The Southerner A Romance of the Real Lincoln] Reference

There will also be ornamental peppers, plumbago and Jerusalem cherries.    From Wordnik.com.  [News from www.pantagraph.com] Reference

In the vicinity of Seatoller is the celebrated mine of plumbago, or black lead.    From Wordnik.com.  [Rides on Railways] Reference

His plumbago-grey suit fitted exactly -- save that it was perhaps a little tight.    From Wordnik.com.  [The Lost Girl] Reference

The men wore, on the head, grease mixed with ochre -- a sort of plumbago, found at the.    From Wordnik.com.  [The History of Tasmania , Volume II] Reference

It consists of a series of silk disks saturated with a sizing of plumbago and well dried.    From Wordnik.com.  [Edison, His Life and Inventions] Reference

At other times it hardly measures the thickness of paper, coating the gneiss slabs like plumbago.    From Wordnik.com.  [Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2] Reference

It somewhat resembles plumbago, with which it is sometimes diluted, particularly when it is fine.    From Wordnik.com.  [American Hand Book of the Daguerreotype] Reference

Victor could have stopped, but the rock on which he had fallen seemed to be covered with plumbago.    From Wordnik.com.  [Deerfoot in The Mountains] Reference

The rocks were all of gneiss, with granite veins, tourmaline, and occasionally pieces of pure plumbago.    From Wordnik.com.  [Himalayan Journals — Complete] Reference

If I recollect right, steel and plumbago, which you mentioned in the last lesson, are both carburets of iron?.    From Wordnik.com.  [Conversations on Chemistry, V. 1-2 In Which the Elements of that Science Are Familiarly Explained and Illustrated by Experiments] Reference

The orchids did NOT turn up, that is the point; and I managed to make shift with the plumbago and the geraniums.    From Wordnik.com.  [Hilda Wade, a Woman with Tenacity of Purpose] Reference

Further on, giant chrysanthemum blooms were massed beneath the clusters of pale plumbago-flowers on the trellis.    From Wordnik.com.  [The Market-Place] Reference

The poles of the electromagnet in the local circuit are hollowed out and filled up with carbon disks or powdered plumbago.    From Wordnik.com.  [Edison, His Life and Inventions] Reference

Its known minerals are gold, copper, lead, cobalt, iron, coal, tin and plumbago: copper and iron having long been worked by the natives.    From Wordnik.com.  [Cetywayo and his White Neighbours Remarks on Recent Events in Zululand, Natal, and the Transvaal] Reference