16 



BULLETIX 160, U. S. DEPARTMENT OF AGRICULTURE. 



The chemical analyses of these plants, taken from Bulletin Xo. 

 60 of the Xew Mexico Agricultural Experiment Station, 1 are as 

 follows : 



Table XVII. — Chemical analysis of Platopuntia lindheimeri. 



Green. 



Air drv. 



Sample Xo. 



Spines 



Water 



Ash 



Crude protein 



Crude fat 



Xitrogen free extract 



Crude fiber 



Organic matter 



7516 



7567 



Per cent. 



0.10 



87.36 



2.82 



.60 



.26 



7.54 



1.42 



9.82 



Per cent. 



79.88 

 4.98 

 .45 

 .20 

 9.55 

 4.94 

 15.14 



Per cent. 

 0.42 

 84.82 

 2.27 

 .96 

 .30 

 9.84 

 1.81 

 12.91 



Per cent. 



0.72 



5.65 



21. 05 



4.49 



1.95 



56.26 



10.50 



73.30 



Per cent. 



5.20 

 23. 45 



2.12 



.95 



44.98 



23. 30 



71.35 



Per cent. 

 2.60 

 6.55 

 13.95 

 5.92 

 1.82 

 60.61 

 11.15 

 79.50 



ANALYSIS OF THE ASH. 



[Sample Xo. 7515.] 



Carbon per cent. . 0. 14 



Sand do 29 



Per cent in pure ash: 



Soluble silica (SiO) # 43 



Iron (Fe) " 20 



Aluminum ( Al) 00 



Manganese (Mg) 49 



Potassium (K) 14.22 



Sodium (Xa) 35 



Phosphoric acid radicle (PO<) 1. 11 



Sulphuric acid radicle (SO«) 1. 15 



Chlorine 2. 15 



Carbonic acid radicle (C0 3 ) 49. 12 



Table XVIII. — Chemical analysis of Platopuntia cngelmannii. 



Green. 



Air drv. 



Sample Xo : 65621 



P.ct. 



Spines 



Water ! 89. 09 



Ash ' .91 



Crude protein 48 



Crude fat 33 



Nitrogen free extract 7. 31 



Crude fiber ; 1.88 



Organic matter ' 10.00 



7810 



7810 



P.ct. 



0.32 



91.07 



2.00 



.32 



.12 



4.95 



1.54 



6.93 



P.ct. 



0.04 



89.41 



1.60 



.35 



.23 



7.21 



1.20 



P.ct. 



S5.il 

 .77 

 .46 

 .33 



10.03 

 3.00 



13.82 



P.ct. 



6.20 

 7.80 

 4.16 

 2.85 



62.84 

 16.15 

 86.00 



P. cf. 

 3.33 

 7.33 



20.80 

 3.29 

 1.20 

 51.43 

 15.95 

 71.87 



P.ct. 

 0.33 

 6.83 

 14. 05 

 3.07 

 2.00 

 63.48 

 10.57 

 79. L? 



P.ct. 



3.97 

 5.07 

 3.06 

 2.20 



72.58 

 13.12 

 90.96 



Table XIX. — Chemical analysis of Platopuntia tuna. 





Green. 



Air dry. 





7519 



7577 



7519 









Spines 



Per cent. 



0.36 



81.86 



4.29 



1.32 



.28 



8.88 



4.07 



14.55 



Per cent. 



Per cent. 



1.82 



5.18 



21.65 



6.68 



1.40 



44.56 



20.53 



73.17 



Per cent. 



Water 



92.25 

 1.75 

 .63 

 .16 

 4.02 

 1.19 

 6.00 



8.12 



Ash 



20.80 



Crude protein 





Crude fat 



1 85 





47 60 



Crude fiber 



14 10 



Organic matter 



71 08 







1 Griffiths, David, and Hare. R. F. Prickly pear and other cacti as food for stock, II. 

 X. Mr-x. Agr. Expt. Sta. Bui. 60, 134 p., 7 pi., Xovember, 1906. 





