New YorK AGRICULTURAL EXPERIMENT STATION. 163 
when the temperature is 70° or 80° F., and this results in a 
proportionate increase of solids. This is readily shown by tbe 
following tabulated results: 
TABLE XIX.—INCRBASE IN PERCENTAGE OF SOLIDS BY EVAPORATION 
ON STANDING. 
NUMBER OF 21 months.'33 months./36 Rte d 6 months.|72 months./80 months. 
EXPERIMENT. 
Per ct. Per ct. Per ct. Per ct. Per ct. Per ct. 
2.87 3.19 3.28 3.30 5.86 
2.86 3.54 3.79 3.95 — = 
eo 1.47 — — 2.00 — 
1.47 Wee2 —- — 7.45 ——> 
(5) In contrast with increase of solids in old vinegar on stand- 
ing, we have instances where the reverse process has taken place 
and the loss has been very marked. In these cases the loss of 
solids was accompanied by a loss of acetic acid as the result of 
some form of destructive fermentation, so that the liquids really 
ceased to be vinegar. In the following table we give several 
instances of this kind: 
TABLE X.X.—DECREASE OF Sorips By DeEesrrucTIvVE FERMENTATION 
ON STANDING. 
NuMBER OF EXPERIMENT. Fresh. 21 months. 60 months. 
: Per ct. Per ct. Per ct. 
Mpa aera Pere ei ere stent Gute wits eee eae a 15.27 2.10 0.73 
HS TA Parca ee oe stolen orc cuore) ons «he bie loge exe foe 1527 1.45 0.60 
MET PIM Paste teen tal ote a iebe meen alek sist ote als 15.88 => 0.60 
aE Reese Ne lero iars cro eeate ogc bial oce wteus aoheye se 4 13.97 ——— 1 Lea 
RAP ete Rare etel ce citete tila nteda alah svocoaktt eco rahare wake 13.97 SS 0.80 
Cr TNs eciece me eireue Diese Sh clave Goa oa-ere 13.97 === 0.77 
SSE MP ey oral eieLoy at aa <chvel ie Chorele s/ Sasi sranccelels, Hels 13.97 Sess 0.74 
(6). A detailed study of the individual experiments, as given 
in the appendix, shows that there is quite generally a decrease 
of solids to a point below 2 per ct., but that sooner or later 
there is, under normal canditions, a subsequent increase of solids. 
CIDER VINEGAR IN RELATION TO LEGAL STANDARDS. 
Where a specific legal standard has been established by differ- 
ent states, the percentage of acetic acid and of solids is generally 
used as the basis of fixing such a standard. In different states, 
