GROWTH AND FEEDING OF HONEYBEE LAR\ 19 
The increase in growth, measured by ] - _ ittain a 
maximum at the close of the second day and from that time steadily 
declines until the close of larval development. 
Great individual differences in weight arc noted between different 
lots of the same age and between different individuals of similar 
in the same lor. 
The maximum average weight appears to be fairly constant, at 
least for the same colony under similar conditions. 
Stimulating the activity of the bees by feeding a thin sugar sirup 
during a dearth to produce the effect of a honey-flow v 1 to 
cause an increase in the weight of larvse -1- day- old and above. T 
much as S per cent in the case of 6-day-old larva 
The weights of larva 3 over 3 days old are found to be affected by 
variation- in the honey-flow, the rate of growth decreasing under 
conditions of dearth. 
Sealing of the cell is begun before the larva has attained its 6j 
weight, and about one-third of the mouth of the cell is covered before 
this weight is attained. 
Great differences exist in the time of the sealing of the cells of a 
given lot of larva? of the same age, a period of several hours inter- 
vening between the sealing of the earliest and that of the latest cell. 
Undersized or dwarf bees may be produced from larva? that are 
not fully fed. 
From the various observations made, the change in the composition 
of the food of the honeybee larva, from one of high nitrogenous con- 
tent to one of high sugar content, takes place as early as the third 
day after hatching from the egg. 
The excess of weight of food unconsumed in the cell before this 
change in food composition occurs is correlated with the uniformly 
great relative increase in growth of the larva during the first three 
days of larval life. All later changes in the rate of growth are cor- 
related with the condition of the honey-flow. 
The time spent by the nurse bees in nursing, as observed by Line- 
burg, is correlated with the demand- of the larvae for the different 
types of food before and after change in composition occurs. 
