(A.) Common Spear-Mint, set in Spring-Water. The Planted weighed when put in, July 20. just 27 Grains; when taken forth, October 5. 42 Grains: So that in this space of 77 Days, it had gained in weight 15 Grains.

The whole Quantity of Water expended, during these 77 Days, amounted to 2558 Grains. Consequently the weight of the Water taken up, was 170815 times as much as the Plant had got in weight.

(B.) Common Spear-Mint, Rain-Water. The Mint weigh'd, when put in, Gr. 28¼; when taken out Gr. 45¾, having gain'd in 77 Days Gr. 17½.

The Dispendium of the Water Gr. 3004, which was 1712235 times as much as the Plant had received in weight.

(C.) Common Spear-Mint, Thames-water. The Plant when put in, Gr. 28, when taken forth, Gr. 54. So that in 77 Days it had gained Gr. 26.

The Water expended, amounted to Gr. 2493. which was 952326 times as much as the additional weight of the Mint.

(D.) Common Solanum, or Night-shade: Spring-water. The Plant weigh'd, when put in, Gr. 49; when taken out, 106; having gain'd in 77 Days 57 Gr.

The Water expended during the said time, was 3708 Gr. which was 65357 times as much as the Augment of the Plant.

This Specimen had several Buds upon it, when first set in the Water. These in some Days became fair Flowers, which were at length succeeded by Berries.

(E.) Lathyris seu Cataputia Gerh. Spring-Water. It weigh'd, when put in, Gr. 98. when taken forth, Gr. 101½. The additional weight for the whole 77 Days, being but Gr. 3½.