516 



Drs. Will and Fresenius on the 



hand, bibasic phosphates (PO5 + 2MO). This relation is 

 maintained also when the seeds are grown in different locali- 

 ties. The solution of ashes containing tribasic phosphates 

 gives a yellow precipitate with nitrate of silver, even if made 

 immediately after ignition, whilst that of those containing bi- 

 basic phosphates gives a pure white precipitate. The quan- 

 tities of oxygen contained in the bases of these seeds (deduct- 

 ing the sulphates and chlorides) are so nearly alike, that it is 

 evident that the law of replacement of bases applies also to 

 the phosphates. The following analyses demonstrate this fact. 



I. Analyses of Seed- Ashes containing tribasic phosphates, some" 

 times also mixed with bibasic phosphates. 



The analyses marked thus * were conducted under the superintendence of 

 Dr. Wm. 



Potash 



Soda 



Lime 



Magnesia 



Peroxide of iron 



Phosphoric acid 



Sulphiu-ic acid 



Chlorine (or chlor. sodium) 

 Silica 



Oxygen in the bases 



Peas, 



Fresenius 

 and Will 

 (Giessen). 



39-51 

 3-98 

 5-91 

 6-43 

 1-05 



34-50 

 4-91 

 3-71 



11-18 



Bichon 

 (Holland). 



34-19 

 12-86 

 2-46 

 8-60 

 0-96 

 34-57 

 3-56 

 0-31 

 0-25 



12-23 



Thon I Boussingault 

 (Kurhessen). (Bechelbronn), 



35-20 

 10-32 

 2-70 

 6-91 

 1-94 

 34-01 

 4-28 

 2-56 

 0-29 



11-44 



36-31 



2-56 



10-39 



12-24 



31-00 

 4-83 

 1-13 

 1-54 



1^-51 



Horse-Beans 

 (Vicia faba). 



Bichon 

 (Holland). 



Boussing. 

 (Alsace). 



Buchner 



(Giessen).*, 



Beans 

 (Phaseolus vulgare). 



Thon 

 (Kurh.). 



Boussing. 

 (Alsace). 



Potash 



Soda 



Lime 



Magnesia 



Peroxide of iron 



Phosphoric acid 



Sulphuric acid 



Chlorine 



Silica 



Oxygen in the bases 



20-82 

 1906 

 7-26 

 8-87 

 1-03 

 37-94 

 1-34 

 1-48 

 2-46 



13-56 



47-14 



5-33 



8-98 



35-67 

 1-66 

 0-71 

 0-51 



12-42 



32-71 



12-75 



4-72 



613 



0-66 



39-11 



0-47 

 12-69 



21-71 

 2107 

 5-38 

 7-35 

 0-34 

 35-33 

 2-28 

 3-32t 

 1-48 



13-04 



51-36 



607 

 12-03 



28-53 

 1.36 

 010 

 1-05 



14-73 



t Chloride of sodium. 



