LOVERING’S EXPERIMENTS. 9 
degree more than the previous cutting), from the six and seven lower 
joints ; juice slightly acid. First clarification four and three quarter 
gallons, neutralized with three tablespoonsful of milk of lime, stirred in 
one pound fine bone black, and three eggs, and placed it over a slow 
fire; at 215° Fahrenheit took off a very dense, thick, green scum; 
when at 162° Fahrenheit it marked 73° Beaumé. 
A second parcel ef juice from this grinding (three and a quarter 
gallons) was treated in the same manner, and set aside, both having 
been first boiled down to 22° Beaume. 
Oct. 14, Cut and ground fifty feet ; eighty-one canes, produced 
poe +, seven and a quarter gallons juice, 10° Beaumé, which 
N. W. clear. was treated as above, except that the eggs were 
omitted. 
Oct. 15, 
Temp.S8 a.m. Out and ground fifty feet, produced eight and a 
ue i quarter gallons juice, weighing 10° Beaumé. 
rain. 
ea «, Cut and ground fifty feet, eighty-six canes, eight and 
46°, noon 60°. three eighths gallons, 10° Beaumé. 
N. W. stormy. 
The whole of the foregoing four parcels were at this stage of the pro- 
cess concentrated to 22° Beaumé, and set aside until I had completed 
the series on the 21st October ; they were then collected together, and 
again clarified with eggs, and a second scum taken off; they were 
then again placed over the fire, and when at the temperature of 225° 
Fahrenheit, clear lime water in small quantities was added to coagulate 
the vegetable albumen, which is not disengaged at a lower temperature, 
but which is then observed as a whitish scum, very tenacious and 
glutinous, and is very detrimental to crystallization. After the vari- 
ous delays, heatings and re-heatings consequent on my limited means 
of working, (the great disadvantage of which, those acquainted with 
the subject only can appreciate,) I commenced filtering the whole, but 
found it so ropy and glutinous that it would not pass through; diluted 
it to 10° Beaumé, when it came through tolerably bright ; then passed 
it through five feet of animal black ; it parted with its coloring matter 
very freely. ' 
