DUN 



204 



DUN 



sition, therefore, of this compost would 

 indicate the powerful fertilizing effects 

 which it is proved to produce. The 

 mass of easily soluble and decomposa- 

 ble animal matters and salts of ammo- 

 nia with which it abounds, its phosphate 

 of lime, its carbonate of soda, are all, 

 by themselves, excellent fertilizers, and 

 must afford a copious supply of food to 

 plants. 



" The disagreeable smell may be de- 

 stroyed by mixing it with quicklime; and 

 if exposed to the atmosphere in thin lay- 

 ers in fine weather, and mixed with 

 quicklime, it speedily dries, is easily 

 pulverized, and in this state may be used 

 in the same manner as rape cake, and 



men salt, phosphate of lime, and sul 

 phate of soda. 



cow URINE. 



Water 66 



Phosphate of lime . . . 

 Chloride of potassium, and 



sal-ammoniac . . 

 Sulphate of potash . 

 Carbonate of potash . 

 ammonia 



Urea 



:} 



" One thousand parts of dry wheat 



straw being burnt, yielded M. Saussure 



forty-eight parts of ashes ; the same 



quantity of the dry straw of barley 



derivered""int7"the fJrrow" with' "the ! yielded forty-two parts of ashes. The 



gggj ,, j portion dissipated by the fire would be 



From the experiments of M.Schubler!P'''"'=]P»l'y '=^'•^0". (charcoal,) carbu- 



and others, the relative value of night- ! !''^"*^.'i hydrogen, gas, and water; one 



soil is as follows: — 



" If a given quantity of the land sown 

 without manure yields three times the 

 seed employed, then the same quantity 

 of land will produce five times the 

 quantity sown when manured with old 

 herbage, putrid grass or leaves, garden 

 stuff, &c. ; seven times with cow-dung ; 

 nine times with pigeon's dung; ten 

 times with horse-dung; twelve times 

 with human urine ; twelve times with 

 goat's dung ; twelve times with sheep's 

 dung ; and fourteen times with human 

 manure, or bullock's blood. But if the 

 land be of such quality as to produce 

 without manure five times the sown 

 quantity, then the horse-dung manure 

 will yield fourteen, and human manure 

 nineteen and two-thirds the sown quan- 

 tity." — Johnson^s Fertilizers. 



Fowl Durag-, if composed partly of that 

 of the duck, which is a gross feeder, is 

 nearly equal to guano. This, and that 

 of the pigeon contain much ammonia, 

 and all abound in phosphate of lime, 

 mixed with decomposing organic mat- 

 ters and uric acid, all highly valuable 

 as fertilizers. 



Stable or Farm-yard Dung is usually 

 composed of the following matters: — 



HORSE URINE. 



Water and mucus .... 9.4 

 Carbonate of lime .... 1.1 

 soda .... 0.9 



Hippurate of soda .... 2.4 

 Chloride of potassium . . . 0.9 



Urea 0.7 



But besides the above, it contains com- 1 — Journ. Roy. Agr. Soc, Vol. I. p 



princi-) 



id sul-S- 221 



hundred parts of these ashes are com- 

 posed of — 



Various soluble salts, princi- 

 pally carbonate and 

 phate of potash 

 Phosphate of lime (earthy) 



salt of bones) .... J "^ 

 Chalk (carbonate of lime) . . 1 



Silica (flint) 61i 



Metallic oxide (principally) - 



iron) J , 



Loss .' 7l 



" The straw of barley contains the 

 same ingredients, only in rather differ- 

 ent proportions. 



" The solid excrements of a horse 

 fed on hay, oats, and straw, contain, 

 according to the analysis of M. Zierl, 

 in 1000 parts : — 



Water 698 



Picromel and salts .... 20 

 Bilious and extractive mat-) ,~ 



ter . . . . 

 Green matter, 



mucus, &c. . 

 Vegetable fibre, 



mains of food 



albumen,) 

 and re-j 



63 

 202 



" These, when burnt, yielded to the 

 same chemist sixty parts by weight of 

 ashes, which were composed of — 



and) c 



Carbonate, sulphate, 



muriate of soda . . . ^ 



Carbonate and phosphate) ^ 

 oflirae J 



Silica 46" 



4S9. 



