NO. 14 SENSE ORGANS ON MOUTH-PARTS OF BEE — McINDOO 



The following day mannose (a monosaccharide or simple sugar) 

 candy was given to the bees used in the preceding experiments. This 

 candy was made by kneading pure mannose (crystallized and washed 

 twice) and honey. For a few moments the bees in two cases seemed 

 to like the mannose candy equally as well as the cane-sugar candy, 

 although after a short time they became sick and later several died. 

 As an average for the 100 bees for five counts, 24.2 per cent were 

 observed eating pure cane-sugar candy, 0.2 per cent eating candy con- 

 taining carbolic acid, none eating candy containing alum and 3.6 per 

 cent were seen eating mannose candy, making a total average of 28.1 

 per cent eating at any one count. 



Fifteen grams of common salt (NaCl) were kneaded in honey. 

 This mixture was then divided into five equal parts. It and chinqua- 

 pin honey were fed to fresh bees. During the first 15 minutes the 

 bees ate the salt containing honey rather freely, but seldom touched 

 the chinquapin honey and after that seldom ate any of either food. 

 Forty-five minutes after introducing the food, several bees in each 

 case began to die. As an average for the 100 bees for five counts, 2.2 

 per cent were seen eating chinquapin honey and 2 per cent eating salt 

 containing honey, making a total average of 4.2 per cent eating at any 

 one count. 



The following is a tabulated summary of the preceding results 

 obtained by feeding bees foods containing various substances. The 

 figures in the third to tenth columns represent the average per cent or 

 number of bees eating a particular food at any one count. 



TABLE I 



Preliminary Experiments in Feeding Bees Foods Containing Various 



Substances 



