18 BULLETIN 46, HAWAII EXPERIMENT STATION. 
sprinkling can. The mass may be thoroughly worked over first 
with a rake and next with a scoop shovel. By following this method 
a man can mix 2 or 3 tons of feed per day. During the past year 
the Haiku substation installed a mixing machine that had been im- 
provised from a continuous cement mixer. It is furnished with a 
measuring device so arranged that the concentrated grain feed can 
be definitely proportioned to the less concentrated and bulkier 
pigeon-pea hay meal. This machine mixes 4 or 5 tons of feed in a 
day and seems to work very satisfactorily. 
Two milling plants have installed large, powerful mixers similar 
to the type used for. mixing fertilizers. These mixers have a capacity 
of 20 to 25 tons per day and very thoroughly mix the molasses with 
the grain feeds. The entire cost of the milling and mixing machinery 
installed at the Haiku substation, not including engine and buildings, 
was about $500 ; the recutting and grinding mill and repaired parts 
costing $150 ; the wagon elevator or bagging attachment for the mill, 
$50 ; the feed mixer, about $100 ; the tank, which was connected with 
the steam boiler for heating molasses, $100 ; and incidentals, $100. 
SUGGESTED FEEDING RATIONS HAVING A BASE OF PIGEON-PEA PRODUCTS. 
A series of Hawiian-grown and mixed feeding rations, having as 
a base pigeon-pea forage in some of its various forms, is given below. 
The simplest possible ration is given first. This is followed by the 
more complex and specifically balanced rations for some definite 
purpose and by explanator}^ notes. 
Ration No. 1. — This simple ration consists of pigeon-pea tops cured 
as hay or fresh forage in full seed used as a soiling crop. It would be 
suitable for mules, horses, dairy cows, cattle, and sheep having a run 
of good pasture while on light work, or for dairy cows that are dry. 
However, in a recent feeding experiment with cows in full milk, the 
straight pigeon-pea hay ration produced a better flow of milk than 
fresh cane tops and sorghums supplemented with a standard grain 
ration. This might properly be termed a " maintenance " ration. 
It would be classed as a " narrow " ration because the proportion of 
crude protein is large in comparison with that of the carbohydrate 
and fat. When the reverse is true, as in ration No. 2, it is termed a 
" wide " ration. Convenient designations for " narrow " and " wide " 
rations would be the terms " nitrogenous " feed and " carbonaceous " 
feed, respectively. The feeding would best be done from slatted 
overhead racks, each of which is provided with a tight, shallow 
trough at the base to collect falling seeds and leaves. In this way 
loss of this valuable portion of the feed would be prevented. 
Ration No. 2. — This ration consists of two-thirds pigeon-pea hay 
meal and one-third cane molasses. It is a very cheap feed, and costs 
