342 REPORT OF THE DEPARTMENT OF ENTOMOLOGY OF THE 
Marblehead lime, superfine.—Five 50-gallon lots were pre- 
pared by the common method. This lime formed an uneven lumpy 
paste when mixed with the oil and did not retain oil satisfactorily 
after agitation was applied. Repeated attempts to make a good 
mixture resulted in failure. In the following table may be seen 
the variation in the various mixtures as shown by 25 samples 
taken from the five different lots: 
TABLE IIT. QUANTITY OF EMUZSION, FREE OIL, WATER, AND LIME IN™ THE 
SuUPERFINE MARBLEHEAD LIME MIxTURE TAKEN I1N~_ 1000 Cc. oc. 



CYLINDERS. 
LOT. Sample. Emulsion. Free oil. Water. (pr Jaen a 
No. C.c. C. c. Coc Cre 
ee 1 500i... Siew: 360 140 
2 "Trace. ese 0] ree ie ee 668 342 
pe A ita weet SSN A cap: CRB Ae 800 200 
4 SPAS WE tae Re lig eee meee 833 167 
LR Feed bet crys are ol bie ree wt 800 100 
Saree s 
1B he 1 SSS Ai sae eases eee 467 200 
2 yo gae Sater, tee 595 400 © 
Suilet. chor eee 5 200 795 
4 SS20 eer oe ae 428 250 
5 500 263 125 112 
Pee ee eh. ae iL Al, | ee ere en 250 625 125 
TAR Pee Oe NAS os 125 625 250 
OA. 2. ROR Seale Lee 800 200 
4 125 163 562 150 
5 400 100 S¥ KD 125 
Vaan Grn hee A mgs Be 1 DAR Dial tenn aka eaten om 625 0b cesS eee 
ul wees ee 125 625 125 
UE cba bis eee ee GML Ls tenet ee 800 200 
4 125 163 562 150° 
§ 423 (ti 325 187 
ME. wars cca EER ek Gis 1 AZt eons. eee ee 380 145 
2 5S} seer eee, 660 335 
Fs a ROH 9S och aN a eS ee A et 750 250 
EN Ee a ee 5 200 795 
Ds ack racesd 20 aha eee 800 200 





Marblehead lime, grade.—This_lime was prepared in four 50- 
gallon lots. The lime formed a white pasty mass which did not 
retain the oil on the addition of water followed with agitation. 
The force of the pump appeared to drive the oil from the lime. 
As with the preceding lime the attempts to produce a complete 
emulsion resulted in failure. A comparison of 16 samples taken 
from the four lots will show the extreme variation of the mixture 
made with this lime. 
