46 MISC. PUB. 190, U.S. DEPT. OF AGRICULTURE 
truding navels (10g), sprouting (10), sunburn (10h). 
thorn scratches (10i), disease, insects, or mechanical 
or other means (10). 
In this grade not more than 50 percent in the ag- 
gregate of the surface of each fruit may be affected 
with discoloration (7). 
U.S. No. 1 Bright.—The requirements for this grade 
are the same as for U.S. No. 1 except that in this 
grade no fruit may have more than 20 percent in the 
aggregate of its surface affected with discoloration 
(7). (See Tolerances pp. 51 to 53.) 
U.S. No. 1 Russet.—The requirements for this 
grade are the same as for U.S. No. 1 except that in 
this grade, more than 60 percent, by count, of the 
fruit shall have in excess of one half of the surface 
in the aggregate affected with discoloration (7). 
(See Tolerances pp. 51 to 53.) 
U.S. No. 2 shall consist of citrus fruits of similar 
varietal charactevistics (1) which are mature but 
may be only slightly colored (11), fairly firm (12), 
slightly misshapen (18), and slightly rough (14) but 
which are free from bruises, cuts which are not healed, 
decay, growth cracks, and from serious damage (15) 
caused by ammoniation (15a), bird pecks (15), black 
or unsightly discoloration (7 and 15), buckskin (15b), 
creasing (15c), dirt or other foreign materials (15), 
dryness (15d), green spots (15e), scab (15f), scaie 
(15g), sears (15h), split or protruding navels (415i), 
spray burn (15j), sprouting (15), sunburn (15k), 
thorn scratches (151), undeveloped or sunken seg- 
ments (15m), disease, insects, mechanical, or other 
means (15). 
In this grade not more than 50 percent, by count, 
of the fruit may have in excess of one-half of the 
surface in the aggregate affected with discoloration 
(7). (See Tolerances pp. 51 to 53.) 
U.S. Combination grade.—Any lot of citrus fruits 
may be designated ‘U.S. Combination” when not 
less than 40 percent, by count, of the fruits in each 
container meet the requirements of U.S. No. 1 grade 
and the remainder U.S. No. 2 grade, provided that 
not more than 25 percent, by count, of the fruits 
in any container may have in excess of one half of 
the surface in the aggregate affected with discolora- 
tion. (See Tolerances pp. 51 to 53.) 
U.S. No. 2 Bright.—The requirements for this grade 
are the same as for U.S. No. 2 except that in this 
grade no fruit may have more than 20 percent in the 
