NATURAL HISTORY. 



an imperfeft animal. We hnve, indeed, a ftrong 

 fufpicion, that the animal reprefented by Vianelh, 

 cannot be of the Nereis genus. 

 In conchifion of this note, it may not be amils to 

 add, that no animal has been more indehnitely 

 defc'ribed than the Nereis nodihica. The only 

 fpecific charafler afligned to it in the lad edition 

 of Sypma Nature cura a Gmelin, is Corpore vix 

 confpicuo, which being applicable to every minor 

 fpecies, can be no criterion of the individual kind 

 that author had intended ; and the fame vague 

 charafter occurs again in Mull. Zool.^ Prodr. 

 n. 2623. In the twelfth edition of Linn. Syjl. 

 Nat. the body of Nereis noAiluca is' defcribed as 

 confining of twenty-three joints, which is the 

 number reprefented in the Plate inferted in 

 Amoen. Acad. t. 3. but this diltinftion is totally 

 at variance with the fubjeft of Vianelli's traft ; 

 for in that figure there are no more than about 

 eleven joints in the body, inilead of the twenty- 

 three which Linnsus has defcribed. 



BOTANY. 



llkjlralion of the Ttuenty-four Linnean Clajfes, according to the 

 Number of the Stamina. 



523. Lettered Botany, Plate II. 



Fi"^. 1. Clafs I. Monandria, one ftamen, as in Sali- 

 cornia, Callitriche, &c. 



2. 2. Diandria, two llamens, as in Vero- 



nica, &c. 



3. 3. Triandria, three ftamens, as in Hor- 



deum, Agrojlis, &c. 



4. 4. Tetrandria, four ftamens, as in Ilex, 



&c. 

 J. 5. Pentandria, five ftamens, as in Bo- 



rago. Primula, &c. 



6. 6. Hexandria, fix ftamens, as in Allium, 



Eriofpermum, Ornithogalum, &c. 



7. 7' Hcplandria, feven ftamens. Trien- 



talis, Difandra, JEfculus, Petro- 

 carya, Pancovia, and Jone/ia are 

 of this clafs 



5. 8. Odandria, eight ftamens, as in Epi- 



lohium, Qiinothera, &c. 

 9. 9. Enneandria, nine ftamens, as in Bu- 



tomus 



10. 10. Decandria, ten ftamens, as in Sedum 



11. II. Dodecandria, twelve ftamens, as in 



Sempervivum ; above twelve, and 

 lefs than twenty ftamens, as in 

 fome other genera • 



12. 12. Icofandria, twenty or more ftamens 



inferted in the calyx, as in Mef- 

 pilus, Pyrus, and fome other 

 fruit-bearing plants, including 

 Fragaria, Ribes, &c. 



•29. Lettered Botany, Plate III. 



Fig. 1 3. Clafs 1 3. Polyandria, many ftamens, and in- 

 ferted into the receptacle or bafe 

 of the flowers, as Papaver (pop- 

 py ) , Trollius ( great butter-cup ) , 

 Ranunculus, &c. 



Plate t> , • a , 



229. Fig. 14. Clafs 14. Didynamia, Itamens two long, two 

 fliorter, as in Lamium, or dead- 

 nettle, &c. 

 jr. I J. Zi?//"^^«iira/a, ftamens four long and 



two ftiorter, as in Cheiranthus, or 

 ftock gilly-flower, Sinapis, Braf- 

 Jica, &c. 



16. 16. Afonrt(/f/^/j/(Z, ftamens united by their 



filaments into a kind of tube, at 

 in RIal-va 



17. 17. Z)Wc^/jM, ftamens united into two 



diftinft parcels or fets, as in 

 Pifum, Lathyrus, Er-vum, &c. 



18. 18. Polyadelphia, ftamens united into 



more than two diftinft parcels or 

 fets, as in Hypericum (St. John's 

 wort) 



1 p. 19. Syngenefia, anthers united into a 



cylinder, flowers compound, a» 

 in Leontodon (dandelion), &c. 



20. 20. Gynandria, ftamens united with or 



growing out of the petals, as in 

 Orchis (bee-flower) 



21. 21. Monoecia, ftamens and piftils in fe- 



parate flowers on the fame plant, 

 as in Zannichelita, Chara, &c. 



2 2. 22. Dioecia, male and female flowers 



on diftinft plants, as in Salix, 

 the willow 



23. 23. Polygamia, male or female flowers, 



or both, with hermaphrodite 

 flowers on the fame or on dif- 

 ferent plants, as in Valantia, 

 Brabeium, Parietaria, &c. 



24. 24. Cry^/(3g-(7mia,fruftification concealed, 



or not diitindtly afcertained 



Uluflration of the Linnitan Orders of Botany, as ejlablijhed 

 upon the Number of the Pijlils. 



230. Lettered Botany, Orders, Plate IV. 



Fig. I. Monogynia, one ftyle or ftigma (with five 

 ftamens), as in a moft extenfive number of 

 plants, among which are Hdiotropium, An- 

 chufa, Borago, &c. 



2. Digynia, two ftyles (with ten ftamens), as in 



Chryfofplenium, Metella, Sckranthus 



3. Trigynia, three ftyles (with ten ftamens), as 



in Silene, Stellaria, &:c. 



4. Tetragynia, four ftyles, with four ftamens, 



as in Ruppia, Potamogeton, Sagina, &c. ; 

 with five llamens, as Parnajfia, &c. ; with 

 fix ftamens, as in Petiveria 



5. Pentagynia,(ive ftyles (with ten ftamens), as 



in Oxalis, Suriana, Lychnis, &c. 



6. Hexagynia, fix ftyles, as in Butomus 



7. Heptagynia, feven ftyles (with feven ftamens), 



as in Septus 



8. Decagynia, ten ftyles (with ten ftamens), as 



in Neurada and Phytolacca 



9. Dodecagynia, twelve ftyles (with twelve fta- 



mens), as in Semper-vivum 



10. Polygamia, many ftyles, as in the I ft. 2d. 3d. 



and 4th. order of Clafs Syngenefia 



11. Gymnofpermia, naked feeds, as in Ajuga, 



Teucrium, Saturcja, &c. 



