ALL 



ALL 



Fl. Grxc. Sibth. n. 781. Fl. Grace, t. 3^5, unpuW. 

 (A. album; Bivona Sic. cent. 1. 16. " Santi Viagg. al 

 Montam. 352. t. 7. Bertol. Gen. 51. Savi Etrufc.^ 2. 

 210.)— Stalk naked, triangular. Leaves lanceolate, feiTile. 

 Petals obtufe.— Native of fields in Italy and Sicily, flower- 

 ing in March. This is one of thofe plants, which, on account 

 of their novelty, or rarity, Dr. Sibthorp adxnitted into his 

 F/ora Gr<eca, having gathered them in the courfe of his 

 travels, though perhaps not in Greece itfelf. j4. laaeum 

 agrees with triquetrum, n. 44, next to which it (hould be 

 placed, in having an acutely triangular /F^/^',- but differs m 

 the lanceolate leaves, and ftiorter, broader, more obtufe, 

 petals. The pgma moreover is fimple, not three-lobed. 



A. ambiguum. Bulbous Rofe Garlick. Sm. Prodr. Fl- 

 Grsec. Sibth. n. 783. Fl. Grxc t. 327, unpubl, (A. 

 rofeum ;S ; Ker in Curt. Mag. t. 978. Bivona Sic. cent. i. 

 18. Savi Etrufc. v. 2. 210. "A. cameum ; Targioni 

 Tozzetti Ift. Bot. ed. 2. v. 2. 242. t. 6. Moly angufti- 

 folium campanulatum, florerofeo, nodofum ; Cupani Pamph. 

 V. 2. t. 219." Moly ferpentinum vocatum ; Lob. Ic. 160.) 

 — Stalk naked. Leaves femi-cylindrical. Stamens fimple, 

 fliorter than the corolla. Umbel bulbiferous. — Native of 

 Italy and Sicily, flowering in May. Frequent about Pifa. 

 Savi. On the hills of St. Martino near Palermo. Bivona. 

 This Jllium, which, with refpeft to the Flora Gr^ca, ftands 

 in the fame predicament as the lafl;, is made by all authors a 

 variety of rofeum ; for the difference between the fpecies with 

 bulbiferous, and thofe with feed-bearing, tuniels, is acknow- 

 ledged to be, in many inftances, not infallible. In the plant 

 before us, however, there is a great difagreement, as to the 

 charafter of rofeum, which is defcribed \vith flat /eaves and a 

 leafy Jem. But the dried fpecimens are very much alike, 

 not difcovering in either the femi-cylindrical and hollow ftruc- 

 ture of the leaves, (hewn by Dr. Sibthorp's figure. As to 



the flem being leafy or not, many fpecies are in this refpett 

 ambiguous, and rofeum is perhaps improperly confidered a;. 

 of the former denomination- Their roots are precifely alike. 

 The Jlotuers of rofeum are far more numerous, and of a finer 

 pink hue. 



We cannot conclude our furvey of Allium without a re- 

 mark that the whole genus requires to be reformed, witli 

 regard to the arrangement of the fpecies, and the fpecific 

 charafters of many of them. We are alfo aware of feveral 

 that might be added to the above lift, but of which we want 

 fufficient fpecimens or information clearly to difpofe of them, 

 fo as to elucidate rather than confound the fubjeft. 



ALLOCHROITE. See Mineralogy, Addenda. 



ALLOY, in Chemiflry, a combination of two or more 

 metals. In addition to what has been faid on this fubjeA 

 in the Cyclopaedia, we may add the following tabular views 

 from Dr. Thomfon, of the general properties of the different 

 alloys, as far as they have been examined. The chemiftry 

 of alloys is at prefent but little underftood, and, as Dr. 

 Thomfon juftly remarks, thefe compounds in general ap- 

 pear to be much better known to artifts and manufafturers 

 than to chemifts. 



The firft of the following tables comprehends the alloys 

 of the malleable metals with each other ; the fecond, the 

 alloys of the brittle metals ; and the third, the alloys of 

 the malleable and brittle metals. In thefe tables, the letter 

 yi [igmdes malleable; ¥>, brittle ; S, fubmalleable, ufed when 

 the alloy is malleable m certain proportions, but brittle in 

 others. O is ufed when the metals do not unite. The 

 fign -I- is ufed when the alloy occupies a greater bulk than 

 the feparate metals ; the fign — when tl)e alloy occupicii 

 a fmaller bulk. The firft indicates an expunfion ; the fecond, 

 a condenfation. 



Table I Malleable Metals. 



