204 J. M. Ordway on Sesquis alts. 
In the way of neutralization the chlorid. iT d_ the nitrate may 
become nearly sexbasic without any lasting diminution of trans- 
parency. A solution of the normal eblorid | slowly evaporated 
to dryness, was found to have left a bibasi idue that dis- 
solved completely in water. Crystals of the nitrate by e 
to a steam heat for thirty-six hours lost half t hel CW 
ese soluble product consisted of 1,8, Bei ee 
asic formiate of alumina can be p repay , 0 
not fie well. Boxe 
The acetate suffers only half of its acid to ben a 
ammonia. More alkali causes it to thicken like E aeeh: This. 
salt parts with most of its acid in drying. "Tf the normal acetate. 
contains any sulphate,—even that of alumina,—boiling 1 enders 
it opaque 
It is not acetate of alumina, but a solution of the tribasic sul- 
phate in acetic acid, that is used as a mordant for reds in calico 
printing. And for the brighter tints, this solution is Mae pre- 
pared, as it was in the infancy of science, by partially dec rg ' 
sing alum with acetate of lead—the most expensive way t f 
could be devised. If an aqueous solution of the tribasic muriate 
or nitrate would answer as re is 
to @ spongy, ‘gum mlike mass, ook aes dissolves in water. = 
Whether this or any more basic salt, actually-possesses advanta- 
ges over the mordant now in common use, it needs some one 
versed in all the niceties of calico-printing to determine; it lies 
_ outof my province. The tribasic chlorid has been tried on cotton 
_ by the formula for the madder style, with apparently good re- 
sults; but experiments made by a novice, and remote from print 
works, are of little value. 
Z Be ties Fors want of material, I have been — to make 
y examination of the salts of zirconium. But it so happens 
ere is enough on record so show that they ns a unlike 
= other bases of the alumina class. 
describes a soluble “ sates bizirconique,” Br2 5s. He 
sesquibasic chlorid, see et “D 
ins Teau ; an en évaporan! cette solution : 
