EXPLANATION OF PLATES. 
Plate 1. 
a, blackened super foundation; 6, sections of comb built on a 
strip of blackened foundation as shown at a; c, comb built on nar¬ 
row strip of foundation as shown at a;d, fully drawn comb built on 
full-piece starter of black foundation ; e, midrib of natural worker 
comb after removing the cells; /, midrib of comb built on “1898” 
deep cell foundation; g, comb that the bees have just begun to draw 
on medium brood foundation, enlarged about two diameters ; h, like 
the preceding except that the cells are fully drawn. 
Plate 2. 
a, cross-section of very heavy foundation; b, midrib of comb 
built on very heavy foundation in upper two-thirds, the lower third 
being natural midrib extended by the bees; c, cross-section of 
medium brood foundation; d, like the preceding except that the 
bees had begun to draw out the cells in the upper two-thirds of the 
figure; e, the same as d with the cells farther drawn; /, a rather 
heavy super foundation blackened with lamp-black ; g, section of 
comb on heavy foundation shown at a ; h, comb on foundation 
shown at/; i, the upper two-fifths like h and the remainder natural 
drone comb; j, section of thin super foundation ; k, the same as the 
preceding with the cells partly drawn; l , section of extra thin 
foundation. 
Plate 3. 
a, section of comb on thin foundation in upper half, natural 
comb in lower half; b, natural comb; c, natural comb cut from side 
to side of a section of honey; d, comb built on “1898” deep-cell 
foundation; e, cells of natural worker comb cut in cross-section; /, 
cells of natural drone comb in cross-section ; g , cells of worker comb 
in cross-section, the upper one-third of which was built on the 
foundation shown at / of Plate 2, and the rest is natural. 
Plate 4. 
a, cross-section of comb cells, the upper third of which were 
built on “1898” deep-cell foundation; b, cross-section of worker 
