416 Electro- Culture, 



The following are the areas for plots as given by me. Many errors 

 having been observed in periodicals on this point, it may be advisa- 

 ble to send them to you : — 



For a plot of 2 acres . . . . 129 by 75 yards (this is deficient 5 yards) 

 I acre .... 88 55 exact. 

 | of an acre . . 82£ 44 ditto, 

 i ditto .... 73$ 33 ditto. 

 | ditto .... 55 22 ditto. 

 | ditto .... 36 16| ditto (wants 3 yards.) 



And similar proportions for larger areas, in which, of course, it will 

 be necessary, as suggested above, to have two, three, or more sus- 

 pended wires. 



By referring to pages 87, 88, and 89 of Mechi's " Series of Letters 

 on Agricultural Improvement," except as above corrected, it is possi- 

 ble to pursue experiments this year with accuracy, and, I believe, a 

 certainty of success. Even " A. H." may be induced to try, in spite 

 of Ingenhouss's startling discoveries. That such may be the result is 

 the expectation of your early and constant reader. — R. Dewey 

 Forster, Findrassie, May 22. — From the Elgin Courant, June 6, 1845. 



A Treatise on the Forces which produce the Organization of Plants. 

 By J. W. Draper, M.D., New York. London, Wiley and Putnam. 



The phenomena connected with the processes of vegetation are so 

 curiously complicated, and so singularly interesting in their beautiful 

 developments, that they have naturally excited the attention of all 

 observant and reflecting minds. The Botanist, the Physiologist, and 

 the Chemist have therein found extensive scope for their inquiries 

 and experiments ; and almost every branch of Natural Philosophy has 

 been brought to bear on the investigations which have been made 

 into the causes operating in the production of the organization of 

 plants. Still, however, considerable obscurity hangs over the ques- 

 tion, which can only be cleared away by patient experiments and un- 

 wearying habits of observation. 



Dr. Draper professes to explain many of the most remarkable 

 phenomena connected with vegetation. This treatise is evidently the 



