+-------------------+--------+-------+---------+------+---------+------+
| Sort. |Fibrine.|Starch.|Vegetable| Gum. |Acids and|Water.|
| | | | Albumen.| | Salts. | |
+-------------------+--------+-------+---------+------+---------+-------
|Red potatoes | 7.0 | 15.0 | 1.4 | 4.1 | 5.1 | 75.0 |
|Ditto germinated | 6.8 | 12.2 | 1.3 | 3.7 | | 73.0 |
|Potato sprouts | 2.8 | 0.4 | 0.4 | 3.3 | | 93.0 |
|Kidney potatoes | 8.8 | 9.1 | 0.8 | | | 81.3 |
|Large red ditto | 6.0 | 12.9 | 0.7 | | | 78.0 |
|Sweet ditto | 8.2 | 15.1 | 0.8 | | 74.3 |
|Potato of Peru | 5.2 | 15.0 | 1.9 | 1.9 | 76.0 |
|Ditto of England | 6.8 | 12.9 | 1.1 | 1.7 | 77.5 |
|Onion potato | 8.4 | 18.7 | 0.9 | 1.7 | 70.3 |
|Voigtland | 7.1 | 15.4 | 1.2 | 2.0 | 74.3 |
|Cultivated in the | | | | | |
| environs of Paris| 6.8 | 13.3 | 0.9 | 3.3 | 1.4 | 73.1 |
+-------------------+--------+-------+---------+------+---------+------+

The first six varieties were analysed by Einhoff, the next four by
Lamped, and the last named by Henry.

YAMS.

The different species of yams have a wide range. In the West Indies
there are several varieties, having distinctive names, according to
quality, color, &c., as the white yam, the red yam, the negro yam, the
creole yam, the afoo yam, the buck yam (_Dioscorea triphylla_), which
is found wild in Java and the East; the Guinea yam, the Portuguese
yam, the water yam, and the Indian yam, &c. The last is considered the
most farinaceous and delicate in its texture, resembling in size the
potato; most of the other sorts are coarse, but still very nutritive
and useful. The common yam (_Dioscorea sativa_) is indigenous to the
Eastern Islands and West Indies. The Guinea yam (_D. aculeata_) is a
native of the East. The Barbados or winged yam (_D. alata_?) has a
widely extended range, being common to India, Java, Brazil, and
Western Africa. The yam species are climbing plants, with handsome
foliage, of the simplest culture, which succeed well in any light,
rich, or sandy soil, and are readily increased by dividing the
tuberous roots. The Indian, Barbados, and red yams ar