344' Mr, Ha worth's Description of ne'w Swculent Plants. 



the arch, and WBO, or rvbo, the last. Here the semicii'cle 

 WAO has turned round the diameter WO towards the po- 

 sition WBO. — Hanstecn.'] 



P. 353. Tuesday, 15th March 1774. " It will not be im- 

 proper to remark, that during our whole long trip of this year 

 towards the south we never once saw a southern light : I must 

 confess that I do not remember a .single nieht which had been 



o o 



sufficiently clear." 



[From the beginning of die year 1774 till the 16th March 

 of the same year, the voyage in the South Sea was confined 

 between 224° and 266° Long. Captain Cook penetrating du- 

 ring that time as far as 71° 10'. Nevertheless no southern 

 lights wei'e observed during those three months, partly be- 

 cause, as Mr. Wales observes, the weather was seldom bright 

 enough ; partly because at that period the nights in the south- 

 ern hemisphere are light; partly perhaps also, because the 

 development of light in the vicinity of the South American 

 magnetic pole seems by far less strong than it is near the 

 Australasian in the South Indian Ocean. — Hanstcen.'] 



LVII. Description of New Sucadent Plants. iJj/ A. H. Ha- 



WORTH, Esq. F.L.S. SfC. 



To the Editors of the Philosophical Magazine and Annals. 

 Gentlemen, 

 tf ERE WITH you will receive my tenth Decade of new 

 *•-'■ Succulent Plants, which you will probably find more in- 

 teresting than any of those which have preceded : because it 

 not only describes ten new species of the genus Gasteria (a 

 branch of the Aloean family), but gives a monogi'aphical sketch 

 of the subject, and an enumeration of all the species and va- 

 rieties of Gas^ma hitherto known; together with a table elu- 

 cidating the dichotomous distribution of the whole. 



But in thus sketching so extensively, the writer has been 

 under the necessity of regulating the locations and characters 

 of a few of his articles from small incipient plants. These, 

 however, he will amend if requisite, in future communications. 



In the year 1732 the best delineator of plants (and even 

 mosses) the world had then seen, Dillenius*, figured in his 

 Hortus Elthamensis nine Aloiian plants, one of which is an 

 Agave; and but one of the remaining eight belongs to the 



* Of this great botanist Linnaeus is recorded to have said, — " Nullius in 

 Anglia, qui genera curat vel intclligit, pretcrquani Dillenius." He was Pro- 

 fessor of Botany at Oxford, and author of the Historia Mvscoruvi, &c. &c. 



jienus 



