Coffee

The Evolution Store has obtained a series of German educational charts that were originally illustrated in the 1950s and ‘60s and continue to be produced by the same printer. This printer has been internationally recognized for producing scientifically accurate charts since 1929.

These charts have been reissued using the original film and the same methods as the first printing!

Key

Fig. 1 - Twig of the Arabian coffee plant:

a) Twig with leaves and flowers.

b) Twig with leaves and fruit.

Fig. 2 - Single flower in vertical section (enlarged).

Fig. 3 - Ripe fruit (coffee berry) with seeds (coffee beans) in section (enlarged):

a) Flesh.

b) Parchment skin.

c) Silver skin.

d) Seed.

Fig. 4 - Germination of the coffee plant:

a) Seed with germinal root.

b) Seed with root and bent stock (hypocotyl) shortly before the freeing of the other constituents of the seed.

c) Seedling with unfolded germinal leaves showing the empty nutrient elements and remains of the integument.

Fig. 5 - Examples of various kinds of coffee beans in various stages of treatment:

a) With parchment covering.

b-g) Without parchment covering.

a-e) Unroasted.

f-g) Roasted.

a) Arabian coffee untreated.

b) Green Arabian pearl coffee.

c) Brown Robusta coffee - boat shaped and regular small size.

d) Green Arabian flat bean.

e) Green Arabian Maragogype - selected large bean.

f) Roasted bean after wet treatment (washed coffee).

g) Roasted bean after dry treatment (unwashed coffee).

Fig. 6 - Harvesting of coffee berries in a plantation (hand picking).

Fig. 7 - Automatic coffee roasting machine with automatic controls and cooling selector tray.