TABLE ILLUSTRATIVE OF THE SIZE AND FORM OF THE STARCH GLOBULES OF VARIOUS PLANTS.

1.  Tous-les-mois (Canna coccinea).—­Grown in Grenada, 1-300 to 1-2,000 of an inch; general size, 1-500; form of the globules, large, elliptical and ovate, and remarkably transparent.

2.  Ditto ditto (species unknown).—­From a plant grown in the garden of the Hon. J. Croal, Georgetown, but gathered before the root was fully ripe; globules spherical, shortly ovate and elliptical; size, from 1-600 to 1-1,600; general size, 1-800.

3.  Buck Yam (Dioscorea triphylla).—­Grown on the banks of the Demerara River.  Form of globules, elliptical, often truncated at one end, so as to be mullar-shaped, some pear-shaped; length, twice the width; size, 1-600 to 1-2,000; general size, 1-800.

4.  Common Yam (D. sativa).—­Grown on No. 1 Canal, Demerara River.  Elliptical, some long elliptical; size, 1-700 to 1-2,000; general size, 1-1,000.

5.  Guinea Yam (D. aculeata).—­Grown in the same locality.  Larger globules, elliptical; smaller ditto, spherical, often truncated; some shortly ovate, with the appearance of being flattened; general size and range, same as No. 4.

6.  Barbados Yam, grown on banks of Demerara river.  Globules, pear-shaped and mullar-shaped; range, 1-700 to 1-1,600; general size, 1-1,000.

7.  Plantain (Musa paradisiaca).—­Grown on the banks of the Demerara river.  Globules long and narrow, generally long elliptical, often more acute at the ends than in any other species, some linear ended abruptly; length, often three times the width; range, from 1-400 to 1-4,000 of an inch; general size, 1-800.

8.  Potato (Solanum tuberosum).—­Irish tubers, from Belfast Sound.  Globules, 1-600 to 1-2,000; general size, 1-1,200.

9.  Potato (Commercial).—­Locality unknown.  Range from 1-600; globules generally same as former, but a few stray ones as large as 1-40 of an inch.

10.  Sweet Potato (Convolvulus Batatas).—­Grown at the Lodge, Demerara.  Form of globules, spherical aggregated; range, 1-1,000 to 1-4,000; general size, 1-2,400.

11.  Arrowroot (Maranta arundinacea).—­Specimens from Bermuda, where the highest priced and best quality is prepared.  Ovate and elliptical; length in the larger globules, twice the width; range, from 1-800 to 1-2,400; general size, 1-1,400.

12.  Ditto ditto, grown on plantation Turkeyen, Demerara, by J.W.  King.  Size and description same as No. 11.

13.  Ditto ditto, grown and prepared in Barbados.  Characteristics the same, but globules more uniform in size.

14.  Ditto ditto, grown on plantation Enmore; not quite so uniform in size.

15.  Bitter Cassava (Janipha Manihot).—­Grown on Haagsbosch plantation.  A few globules occur as large as the 1-1,000 of an inch; these are ovate, the rest are spherical.  The range is from 1-2,000 to 1-8,000; general size, 1-4,000.