386 
EXPLANATION OF PLATES. 
Jar checks to hold the case when elevated, two pieces, 3" longx 1J" 
x }" at one end, and f' x T V" at the other. Guides on outside of 
case (see Fig. 19, p. 48), four pieces, It" x 2" x Cover to up- 
per ventilator of case, one piece, 24" x 1" x $" hung on buttons 
with screws; this ventilator is made by boring holes about J" in 
diameter in the rear of upper part of case, J below (g). 
No. 2, Box Hive, as made by Mr. Colvin, see drawing on page 390, 
with box-cover and observing glass in rear end. 
Bottom (in two pieces only, plowed and grooved together, the 
grain of the wood running across the hive), 24 J" x 14J" x J ' ; rabbet 
across under side of ends fg" on, ~g" in, forming tongue , x a on 
upper side of ends, which are let into groove in sides. Sides, two 
pieces, 24 J" x 10J" x J", cut out from front end on top edge, 4" x 
l-l" deep, for portico roof ; on inside, yV' up from bottom edge, cut 
a groove ■&" x T V' the entire length, to receive tongue on bottom- 
board ; 4" back from front end, from If" up from bottom edge, cut 
a groove T V ' x J" to within of the top edge to let in front ; 
(these sides are nailed to bottom, same as No. 5). Portico roof, 
one piece, 171" x 4|" x J" ; bevel on top side, to 4" thick at front 
edge, back 2 J" to full thickness : front edge rounded from upper 
side. Front, one piece, 14f" x 8|" x l", let into sides fV' at 
each end. Observing-glass in rear, 14" x 6"; strips to form 
rabbet for glass, x naiied all around the space left for the 
glass, and within T V of inside of hive. Rear end, two pieces, 
14 J" x 1J" x one of these nailed to a piece 15J" xlj"x J", so 
that the bottom edges will be flush with each other, is to be dove- 
tailed into the ends of sides 4" up from the top side of bottom- 
board, the other to be nailed to a piece 14j" x J x2J , on one 
side, and 1J" on the other, the top edge of the inside piece J" below 
the outside piece ; then nail these pieces between the sides of 
hive, so that the square edge and widest side come flush with the 
ends and tops of sides. Cover for observing-glass, one piece, 
14" x 1" x G|" inside x 6J" outside, the bevel being made on 
the upper edge; clamps on this cover, two pieces, 6J"xl{"xJ", 
screwed in the middle and nailed at ends on the outside of cover, 
each projecting J" over its end to cover the joint. Ledges around 
