Science

Chevreul, Michel-Eugène

French chemist

Heather

Distribution, & Uses

Dealfish

fish

Indri

lemur species

Almagest

Ptolemy, & Facts

Gilbert, Grove Karl

American geologist

Saponin

chemical compound

Polystyrene

chemical compound

Spiny-headed Worm

invertebrate

Christ’s Thorn

plant

Heat Of Formation

Definition & Facts

Coolidge, Julian Lowell

American mathematician and educator

Electrostatics

Formulas, Examples, & Facts

Elton, Charles

English biologist

Weight

physics

Anomaly

astronomy