C. Crowther and H. E. Woodman 443 



For purposes of comparison the average of Weiniger's results with 

 two brands of palm kernel cake and the general average given by Kellner 

 are included in the table. The Clarforth averages in the main are inter- 

 mediate between the two German averages, crude fibre being however 

 a marked exception. It would seem that Kellner's averages, apart 

 possibly from crude fibre, are not far wide of the mark, being if 

 anything slightly on the low side. His average for crude protein 

 agrees closely with our uncorrected average, but is of course considerably 

 below the corrected average. We incline, on the whole, to regard the 

 results obtained in vitro as the most nearly correct expression of the 

 digestibility of the protein. 



Digestibility of Extracted Palm Kernel Meal. 

 {Period V.) 



After Period IV the original basal ration of hay and palm kernel 

 cake was not reverted to, but the sheep received an allowance of hay 

 reduced to the amount consumed in the earlier periods and to this was 

 added the extracted palm kernel meal. The digestibility of the latter 

 is thus deduced from the records of Periods IV and V, as summarised 

 in Table VIII. 



The concordance between the two sheep is only moderately good 

 throughout. The explanation doubtless lies partly in the less bulky 

 nature of the ration in Period V as compared with Period IV, and con- 

 sequent irregularities in the incidence upon the results of the'metabolic 

 products in the faeces. 



The three sets of averages for extracted palm kernel meal are given 



below : 



Garforth 



Average Weiniger Kellner 



0/ O/ 0/ 



/o /o /o 



76-7 79-7 91 



79-2 74-1 95 



900 — — 



96-3 ? 95 



86-0 '92-6 94 



44-8 55-2 82 



Organic Matter ... 

 *Crude Protein ... 



„ „ (corrected) 



Ether Extract 



Nitrogen-free Extractives 

 Crude Fibre 



* As determined in vitro 



78-3 



If the Garforth average be compared with that for palm kernel cake 

 given on p. 442, it will be seen that the extracted meal is indicated as 

 being rather more digestible than the cake. Except for crude fibre, 

 however, the differences are not great and probably little more than 



