CONTENTS. 



Page 



XXX. Herbage and shrubs spojitaneously produced, 

 after forest timber burnt, by firing the woods, by 



the sanWy - - - - - 237 



XXXI. On trench ploughing, by the same, - 240 



XXXII. Hemlock, for live fences, by the same, 249 



XXXIII. Utility of the Italian mulberry tree, and 



on making wine, by Joseph Cooper, - - 252 



XXXIV. On a three furrow plough, by William 

 Bakewell, of Montgomery County, - - 257 



XXXV. On speltz, by James Mease, M, D. 260 



XXXVI. On draining, by Samuel Dickey, Com- 

 municated to John Miller, and by him to the So- 

 ciety, ----- 262 



XXXVII. Observations on making and fining cyder, 

 and on peach trees, by Timothy Matlack, Esq. 268 



XXXVIII. Postscript to Mr, Taylofs memoir on 

 live fences, - - - - - 280 



XXXIX. Remarks on the plan of a stercorary, de- 

 scribed in the note, page 153, by Richard Peters, 281 



XL. Accoujit of native thorns, by Thomas Main, 286 



XLI. G7'0Wth of thorns, from cuttings of the roots, 

 by James Mease, M. D, - - - - 288 



XLII. Description of a kitchen stove, by Samuel 

 Dickey, Communicated to John Miller for the 

 Society, - - - - - £91 



XLIII. Changes of timber and plants. Races of 

 animals extinct, by Richard Peters. Communi- 

 cati?7g lettei's on the subject: from Mr. Rembrandt 

 Peale, Charles Caldwell, M, D, and Thomas F. 

 Leaming, Esq, - - - - 296 



XLI V. Gypsum ; whether it is found in the United 

 States, by the same, - - - - - 3 10 



