Natural History of British Zoophytes. 225 



their several circles, a situation precisely analogous to the Cuculidcv 

 among the scansorial birds. 



Four out of the five divisions of the family, so far as their ana- 

 logies are concerned, have now, I trust, been sufficiently demon- 

 strated. So that, whatever genus actually fills the interval between 

 those of Indicator and Saurothera, we may feel pretty confident, that 

 it would not affect the arrangement of the remaining types. These 

 primary divisions of the Cuculidce I shall consider as sub-families, 

 to which, for the sake of so distinguishing them, I add the termi- 

 nation of ana, to the name of what appears to be the typical ge- 

 nus in each. I must express my suspicion, however, that these sub- 

 families are only equivalent to those groups called genera in the 

 order of perchers. Our next inquiry will be directed to the con- 

 tents of each of these sub-families, for the purpose of ascertaining 

 the natural series of the genera, and we shall first examine the 

 Cuculinae or Genuine Cuckoos. 



(To be continued.) 



II. — The Natural History of British Zoophytes. By George John- 

 ston, M. D. Fellow of the Royal College of Surgeons of Edin- 

 burgh. (Continued from p. 81.) 



Pallas, who published at this period an admirable history of zoo- 

 phytes,* was also the advocate of the Linnaean doctrine, t but he ad- 

 duced no other facts than those furnished by Baster in its aid. He 

 also adopted the opinion of Baster, who in this respect continued in 

 opposition to Linnaeus, that the true corallines (Corallina) were en- 

 tirely of a vegetable nature, and his arguments on this head may be 

 summed up as follows : In external appearance and structure a few 

 corallines resemble some fuci, and many of them are like confervas ; 

 they differ from other zoophytes in chemical composition, for, on being 

 burned, they emit the smell of vegetable matter, neither do they con- 



* P. S. Pallas, Med. Doct. Elenchus Zoophytorum sistens generum adum- 

 brationes generaliores et specierum cognitarum succinctas descriptiones cum se- 



lectis auctorum synonymis. Hagse-comitum, 1776 " Princeps in hac classe 



opus."— Hall. Bib. Bot. ii. 566. 



f " Didicimus in Zoophytis, sic jure vocandis, vegetabilem naturam cum ani- 

 mali ita misceri, ut vere anceps et dubia passim sit." &c. Elenc. Zooph. Praef. 

 viii. It is because of its accordance with the hypothesis of a continuous series 

 in the structure of organized beings, that Pallas mainly grounds his defence of 

 the vegeto-animal nature of zoophytes. 



