25S Anahjses of Booh. [April, 



Poa ccpspitosa, I Apluda avistata, 



Poa brjzoides, j Andropogon cymbarius. 



20. Commentary on the Genus of Plants called Ziziphora. By 

 H. Kudolphus. P. 307. la this continuation of his paper from 

 the preceding volume the author gives a description and figures of 

 the species of this genus. They are three in number; namely, 

 ziziphora capitata, z. clinopodioides, and z. serpyllacea. 



21. On a Deviation from the usual Position of the Arch of the 

 Aorta, and an unusual Origin of one of its Branches. By P. 

 Zagorsky. P. 318. 



22. A Description of some new Minerals. By Alex. Sclilegel- 

 niilch. P. 321. Four minerals are described in this paper. 

 1. The iberite, of which a description has been already given in the 

 Annah ofPhilosopliy, vol. iii. p, 15:?. 2. Granular basalt. This 

 is a variety of basalt in granular distinct concretions, which consti- 

 tutes hills in Georgia and in Upper Armenia. 3. Opalising 

 {chatoyante) obsidian. It occurs, likewise, in Georgia 4. Oxide 

 of chromium. Colour, grass green. It occurs superficial, disse- 

 minated, and in veins. Internal lustre, dull, or slightly glimmer- 

 ing sometimes. Fracture, fine earthy, sometimes compact, and 

 sometimes fine splinter}-. Opakc ; but the varieties with the 

 splintery fracture are translucent on the edges. Soft. Does not 

 stain the fingers. Streak, whitish. Before the blow-pipe it loses its 

 colour, is infusible without addition, and with borax melts into a 

 fine green glass. It is found at the southern extremity of the Oural 

 mountains, accompanied with chromate of iron. 



23. Description of a new Species of Azalea. By M. F. Adams. 

 P. 332. The species described is the azalea fragrans which grows 

 in the northern part of Siberia upon the borders of the frozen 

 ocean. 



24. Description of the Camtschatka Fish called by the Russians 

 Terpice and J Fachnja. By M. Tilesius. P. 335. The first of these 

 fish constitutes a new genus, which Stellerus called hexagrammos, 

 and Pallas, labrax. The second seems allied to the genus gadus. 

 Tilesius gives it the name of wachnia, and describes two species. 

 The paper is a very elaborate one, and contains a very full descrip- 

 tion of these fish, together with anatomical observations on their 

 structure. 



25. Observations on a Fish called improperly Herring. By N. 

 Ozeretskovsky. P. 3/6. This is a fisli found in the great lake 

 Pereslavle Zaleski, and nowhere else. The author shows that it is 

 not a herring, being distinguished from that fish by having eight 

 fins, while the herring has but seven. It is a species of salmo. It 

 belongs to the coregoni, or those that are destitute of teeth. He 

 conceives tliat it may be only a variety of the salmo morsna, 

 brought into this bke froaj a distance, and altered somewhat in 

 its appearance. 



