. American bee journal. Bee culture; Bees. October, 1914. 347 American ^gc Jonrnal J In order to determine the source of albumen in honey, Prof. Langer in- jected in a rabbit a solution of albumen from honey. The honey-albumen serum gave a precipitate not only with a solu- tion of albumen from honey, but also with watery extracts of bee heads, the larvie and the food (chime? chile?) with which the bees feed the young brood. The same results were ob- tained when, instead of a solution of honey albumen, the watery extracts from bee heads were used for the in- jection. Not fully satisfied with th
. American bee journal. Bee culture; Bees. October, 1914. 347 American ^gc Jonrnal J In order to determine the source of albumen in honey, Prof. Langer in- jected in a rabbit a solution of albumen from honey. The honey-albumen serum gave a precipitate not only with a solu- tion of albumen from honey, but also with watery extracts of bee heads, the larvie and the food (chime? chile?) with which the bees feed the young brood. The same results were ob- tained when, instead of a solution of honey albumen, the watery extracts from bee heads were used for the in- jection. Not fully satisfied with this, Prof. Langer made watery extracts from flowers and seeds of plants from which the bees gather pollen and nec- tar. With these extracts he could in no instance obtain a precipitate with serum of honey albumen or bee-heads extract. Finally he used water ex- tracts of triturated pollen for injection ; the serum obtained gave a precipitate with pollen extracts, but not with honey albumen, etc. Thus it was proven that honey contains albumen which is secret d by the bees, and while trans- forming nectar into honey is incor- porated or mixed with it. It was found that the proportion of albumen in honey \aries comparatively little, and, further, that the " precipi- tate reaction," when the right amount and the right concentration are used, gives results that may quantitatively be useful. The honey albumen serums are not all equal; therefore, in each analysis a genuine honey has to be tested with the other samples, as a check. To obtain the serum, the use of queen-cell contents has been found the most convenient. In making the test, honey solutions are prepared of 10 percent, 2 per- cent, and 1 percent strength; 1 c. c. of each is used. For the 10 percent solu- tion, 'i c. c.; for the 2 percent solution, , and for the 1 percent solution, c. c. of the serum is used and a drop of toluol is added to each sample to check bacterial growth. After a thor- ough shaking,
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Keywords: ., bo, bookcentury1800, bookdecade1860, booksubjectbees, bookyear1861
