240 The N.Z. Journal of Science and Technology. [July 
enumerated. This is especially necessary in the case of creosote, which 
varies in an inordinate degree, and might lead to wrong conclusions when 
used in practice. Another point in this connection is the fact that the 
creosote had already been used by the Railway Department, and an analysis 
might prove instructive at some later date. 
Fractionation of Creosote. —The method of Deans, as given in Allen’s 
Commercial Organic Analysis, was used. Creosote from the Railway 
Department, obtained through the kindness of the Assistant District 
Engineer, was taken as first sample, the reason being that it was the same 
as had been used by the Department in their practical tests at Woodend, 
Southland, where a complete plant had been installed for the purpose of 
treating the native varieties of beech, chiefly Fagus Menziesii. Into a 
tared Jena distilling-flask 250 c.c. of creosote were weighed and distilled at 
a rate of one drop per second. Fractions were collected in tared flasks. 
The results are shown in Table I. 
Table I.—Fractionation of Creosote. 
Fractions. 
Temperatures. 
Percentage. 
I 
Below 170° 
4-60 
II 
170°-205° 
2-16 
III 
205°-245° 
34-03 
IV . 
245°-270° 
12-60 
V 
270°-325° 
26-80 
VI 
325°-345° 
13-00 
Specific gravity at 16° C., 1-076. Heavy residue of naphthalene crystals 
at this temperature. 
Temperature. (Deg Cent) 
Fig. 2.—'Distillation graph of creosote. Heavy line, fraction graph of sample ; 
broken line, limits for grade A; light line, limits for grade B. 
Fractionation of “ LignoliteF —A sample of the above proprietary com¬ 
pound was proffered by Messrs. Keith Ramsay and Co., together with a 
