Agricultur, Horticultur, Forstbotanik. — Chemisches etc. 143 



sämigem Concordia-Typus vorhanden sind und vergleichend weiter 

 gezüchtet werden. 



Auch Svalöfs Capitalerbse , eine frühzeitig reife, erstklassige 

 Kocherbsensorte, hat oft grünliche, die neuere Sorte Capitalerbse II 

 dagegen reiner gelbe Samen. 



Unter den Grünfuttererbsen ist die Peluschke in Schweden 

 immer mehr zur Verwendung gekommen, hat aber eine späte und 

 in Schweden unsichere Reife. Es ist gelungen, eine neue (mit 0351 

 bezeichnete) Sorte in Svalöf zu züchten, die eine genügend sichere 

 Reife hat und höhere Körner- und Stroherträge als die Peluschke 

 liefert; diese Sorte wird baldmöglichst in Handel gebracht. 



Unter den Wickesorten haben die drei neuen Sorten 0402, 0542 

 und 0151 die höchsten Erträge. 



Inbezug auf die sonstigen Ausführungen des Verf. muss auf das 

 Original verwiesen werden. Grevillius (Kempen a. Rh.). 



Dillingham, F. P., A contribution to the history of the 

 use of bark bread. (Bulletin of the Bussey Institution. IIL 

 p. 120-128. 1906). 



A historic account is followed by details of chemical analj^sis from 

 which it appears that the frequently used inner bark of Conifers 

 etc. actually contains less mannan than the wood of the same trees, 

 and the source of any nutritise value that this bark may possess is 

 left still open. Trelease. 



Smith, H. G., Aluminium the chief inorganic element 

 in a proteaceous tree, and the occurence of Alumi- 

 nium succinate in trees of this species. (Proc. Roy. Soc. 



N. S. Wales 1903). 



In this paper the author announces the discovery of a flowering 

 plant which uses the element aluminium in large quantities in its 

 construction, and thus differs in this respect, from all other Phanero- 

 gams. This plant, Orües excelsa, R. Br., (N.O. Proteacese) is one of 

 the „Silky Oaks" of Australia, and occurs plentifully in northern 

 New South Wales and Queensland. It is a tall tree and 

 reaches a diameter of three feet. A section of a tree from Queens- 

 land was exhibited which was three feet in diameter. In the centre 

 of this tree was a large deposit of a basic aluminium succinate of 

 the formula AI2 (C4 H4 04)3 AU O3. The ash of the wood furthest from 

 the deposit contained 79.61 " per cent. of alumina, a considerably 

 larger amount than had previously been found in any of the Crypto- 

 gams, in which alone aluminium was supposed to occur. This 

 specimens was evidently an abnormal one in regard to the large 

 amount of alumina, and the deposit of aluminium succinate is 

 evidently nature's method of getting rid of an excess of aluminium.. 

 Three other samples of the trees of this species from northern New 

 South Wales were investigated , and in the ash of all these large 

 quantities of alumina was found, ranging in amount from 36 to 43 

 per cent. A large amount of the alumina in the ash was present as 

 an aluminate of potash soluble in water, and as no carbonate of 

 potash was detected it is supposed that the potassium aluminate was 

 originally present in the tree as such. In the ash of the sample from 

 Mullimbimby, cobalt was found, together with 3 per cent. of 

 manganese, so that probably cobaltiferous manganese occurs in that 



