48 



L. F. Nilson, 



As the basic glucinum-salts, above mentioned, holds this salt also 

 two mol. water to every atom glueinum. Of the water 4 mol. (calc. 13.64 

 pr. ct.) were parted with, the salt being dried at 100°; the residue has 

 consequently this composition: 5Be0.2Se0 2 -|- 6H 2 0. 



From the basic salt, now mentioned, the other compounds of glu- 

 einum, that will be subsequently described, have been obtained, by heating 

 with weighed quantities of selenious acid. 



The basic salt was treated with 63.08 pr. ct. of its weight of an- 

 hydride of selenious acid, some water added and action allowed to take 

 place at a temperature of about 60°. The solution, after evaporating nearly 

 to dryness and on adding a little water, afforded a salt in globular masses 

 of a gummy nature, tough and flexible in warmth, brittle in cold. By 

 much water, a decomposition seems to be caused, a flaky, white, amorphous 

 precipitate being formed. 



1) 0.3985 gr. salt gave 0.18 gr. selenium or 0.2529 gr. selenious acid and 

 0.0578 gr. glucina. 



2) 0.3965 gr. salt gave 0.18 gr. selenium or 0.2529 gr. selenious acid and 

 0.0555 gr. glucina. 



3) 0.7116 gr. salt, kept over sulphuric acid, did not lose anything of its 

 weight, but diminished gradually, when heated to 100°; after being dried, 

 for several weeks, at this temperature, it had been diminished in weight 

 by 0.0666 gr. 



2. Neutral: Be.0 2 .SeO-f2H 2 0. 



Analyses: 



Calculated on 100 parts: 



found 



calculated 



1. 2. 3. 



Glucina 14.50 14.00 — 



Selenious acid. . . 63.46 63.78 — 

 Water (loss). . . . 22.04 22.22 9-36 



BeO 25.2 14.63 

 SeO 2 111.0 64.46 

 2H 2 36.0 20.91 



100.00 100.00 



172.2 100.00 



Of the water, contained in the compound, it is not possible to expel 

 quite 1 mol., by means of long heating at 100° (ealcul. 10.46, experim. 

 9.36 proc.) the loss during the last week not exceeding 0.0005 gr. 



