o2 BULLETIN 523, U. 8. DEPARTMENT OF AGRICULTURE. 
27. PLAYGROUND EQUIPMENT. 
Playground apparatus; lawn swings; porch swings. 
28. ROLLERS, SHADE AND MAP. 
Rollers, shade and map; venetian blinds. 
29, ELEVATORS. 
Cars (dumb waiter) ; cars, elevator; dumb waiter (cleats, battery) ; 
flooring, cars (passenger and freight) ; frames (elevator cars) ; gates; 
grain elevators; guide posts (dumb waiter) ; strips (elevator cars). 
30, INSTRUMENTS, PROFESSIONAL AND SCIENTIFIC. 
Army supplies; boxes, miter; chests (draftsman’s); firearms; 
litters (Army) ; medicine cases; tripods. 
31. LAUNDRY APPLIANCES, 
Clothes racks; frames, curtain; frames, wash tray; frames, wash 
tub; washboards; washing machines; washing-machine rubbers; 
washing-machine tops, 
32. MACHINERY AND ELECTRICAL APPARATUS, 
Electrical apparatus, parts; battery boxes. 
33. MINE EQUIPMENT. 
Lagging; stone boats. 
84, BRUSHES. 
Brush backs. 
35. PATTERNS AND FLASKS. 
Brick molds; pattern machine parts; patterns, 
36. WHIPS. 
Whip handles. 
37. DOWELS. 
Dowels. 
38. CASKETS AND COFFINS, 
Coffins. 
39. BUTCHERS’ BLOCKS AND SKEWERS. 
Fixtures, butchers’; supplies, butchers’. 
40. AEROPLANES. 
I’rames; propellers. 
41. WEIGHING APPARATUS. 
. 
Scales. 
42. GATES AND FENCING. 
Fencing; pickets, 
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