no 



THE NATURE-STUDY REVIEW [i, 3, may 1905 



The observation hive for the study of bees is simply con- 

 structed and can be made by any one who is at all familiar with 

 the use of tools ; it is also an excellent piece of work for the pupils 

 in manual-training classes to construct. It consists of a small 

 hive with panes of glass at the sides and is placed in the room 



Fig. i — An ordinary bee-hive made into an observation hive by inserting glass panes in sides and 

 putting a glass sheet under the wooden cover. Drawn from hive in Professor Kellogg's laboratory. 

 (From Kellogg's " American Insects," copyright 1904, by Holt & Co.). 



with the entrance arranged so that the bees may pass in and out 

 of a raised window. We have used for this an ordinary Lang- 

 stroth hive ; panes of glass were inserted at the sides and on the 

 top, over which boards were fastened when we were not observ- 

 ing, so that the bees would be content since they were always in 

 the dark. We placed this hive on a table with the entrance on 

 a window-sill ; the sash was lifted an inch or so and to keep the 

 bees from crawling back into the room a strip of wood two inches 

 in thickness was introduced beneath the sash except in front of 

 the entrance of the hive, thus closing the space made by lifting 

 the window. 



An excellent observation hive is one devised and used by Pro- 

 fessor Y. L. Kellogg in his laboratory at Stanford University, 

 and which any carpenter can easily construct. It consists of a 

 box with glass sides, large enough to hold two Langstroth frames 

 one above the other. Thus both sides of each comb are exposed 

 and an individual bee may be kept constantly in sight while she 



