l?9 An ESSAY Chap. 3. 



frep, founds and lively. Having taken the 

 Weight oi each ^ I plac a it in a Vial, ordered 

 as above 5 and as the Flant imbibed and drew 

 oft* the Water ^ I took care to add more of the 

 fame from time to time, keeping an Account 

 of the Weight of all 1 added. Each of the 

 Glaffes, were for better DiJiin8ion^ and the 

 more eafie keeping a Regifter of all Circum" 

 fiances^ noted with a different Mark or Let- 

 ter^ A, B, Q^&c. and all fet in a Row in the 

 the fame Windovo^ in fuch manner that all 

 might partake alike of Air^ Light, and Sun. 

 Thus they continued from Jjdy the Twenti^ 

 eth to OSober the Fifth, which was juft Se- 

 venty-feven Days. Then I took them out, 

 weighed the Water in each Vial, and the 

 Plant likewife, adding to its Weight that of 

 all the Leaves that had fallen of during the 

 Time it flood thus. And laftly, I computed 

 how much each Plant had gaind^ and how 

 much Water \v2isfpent upon it. The Parti- 

 culars are as follow. 

 Spear-Mint A. Common Spear-Mint fet it Spring-Water, 

 s^/nL- "^^^^ '^^^^^ weighed, when put in July 27, 

 v/atcr. juft 27 Grains 5 when taken forth 08ob, 5. 

 42 Grains. So that in this Space of 77 Days 

 it had gained in weight 1 5 Grains. 



The whole Quantity of Water expended, 

 during thefe 77 Days, amounted to 2558 

 Grains. Confequently the Weight of the 

 Water taken up was i70rf- times as much ^s 

 fhe Plant had got in VVeight. 



Th^ 



