886 
EXPLANATION OF PLATES. 
lar checlcs to hold the case when elevated , two pieces, 3" long x 1 J* 
x l" at one end, and J" x -pj" at the other. Guides on outside of 
case (see Fig. 19, p. 48), four pieces, 1 j" x 2" x }". Cover to up- 
per ventilator of case, one piece, 24" x 1" x §" hung on buttons 
with screws; tills ventilator is made by boring holes about in 
diameter in the rear of upper part of case, j" below (q). 
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 x 14 }" x J"; rabbet 
across under side of ends -,V' on, ~g" in, forming tongue - f V' x T V' on 
upper side of ends, which are let into groove in sides. Sides, two 
pieces, 24J" x 10J" x cut out from front end on top edge, 4" x 
11" deep, for portico roof ; on inside, T \" up from bottom edge, cut 
a groove -fo" x the entire length, to receive tongue on bottom- 
board; 4" back from front end, from l j ' up from bottom edge, cut 
a groove T V' x i" to within f" of the top edge to let in front; 
(these sides are nailed to bottom same as No. 5). Portico roof, 
one piece, 17j'x4f"x$"; bevel on top side, to thick at front 
edge, back 2J" to full thickness: front edge rounded from upper 
side. Front, one piece, 14J" x 8J" x J", 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 fg" of inside of hive. Bear end, two pieces, 
14J" x ljj" x l", one of these nailed to a piece 15|"xlJ"x|", so 
that the bottom edges will be flush with each other, is to bo dove- 
tailed into the ends of sides 4" up from the top side of bottom- 
board, the other to bo nailed to a piece 14J"x J"x2J", on one 
side, and 1J" on the other, the top edge of the inside piece §" 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 J" x 6J" inside x 6 J" outside, the bevel being made on 
the upper edge ; clamps on this cover, two pieces, CJ" x 1|" x J", 
screwed in the middle and nailed at ends on the outside of cover, 
each projecting {" over its end to cover the joint. Ledges around 
