40d , Proceedings of the JRot/al Society/. 



"^■' pering upwards, ai-ticulated at the base ; germen hoary, naked and blunt 

 •'"' 'at the apex, included within the calyx-tubo, of five blunt lobes, adhering 

 -i:n to the calyx at the angles only, 5-loeular, dissepiments alternating with 

 ;,j\> the lobes ; placentte central ; ovules numerous, 



..^jfbis is an extremely handsome plant, and flowers very freely in mode- 



,'" rate. heat in July and August. We received it at the Botanic Garden, 



Edinburgh, from Berlin, under the name adopted, but I have not seen 



any account of it published, nor was its native country communicated 



to me. 



Proceedings of the Itoyal Society of Edinburgh. 



1839, December 2.— Sir T. M. Brisbane, Bart., President, 

 in the Chair. The following Commmiications were read : — 



1. Solution of a Functional Equation, with its application to 

 ;- the Parallelogram of Forces and to Curves of Equili- 

 bration. By Dr Wallace, Emeritus Professor of Mathe- 

 afi, matics. ' ' "t''/' 



9j' On General DiiFerentiation. Part I. By Professor Kel- 

 _ land. 



*'-' ' ..■ lii Tl .Tf 



^]- December 16. — Sir T. M. Brisbane, Bart. President, in tlie 

 Chair. The following Communications were read :— 



J, Experiments on the Development and Growth of the Sal- 

 °!'A: mon, from the exclusion of the ovum to the age of two 

 '•' years. By Mr Shaw, Drumlanrig. Communicated by 



hnoq jri^^"^^^ Wilson, Esq. 



" Thfe'autlior, in this paper, gives an account of the continuance 

 and confirmation of liis experimental observations on the growth 

 of salmon fry, .as formerly comninnicated to the Society. He con- 

 siders the objections made to his artificial ponds, in so far as tliey 

 were supposed to afford an insufti;:ient supply of fo(»d, to be with- 

 out reasonable foundation, as these ponds actually abound with the 

 ordinary insect food of fishes, and tiio young broods themselves 

 correspond in every way to those of the same age in the natural 

 streams and pools of the river. He had previously ascertained 

 and stated, that young salmon remain in their native river for two 

 years (under the names of parrs, pinks, fingerlings, &c.), and du- 

 ring that period, or till near its close, he applies to them the naine 

 oi parr, as that by wliich they arc usually designated in Scotland. 

 The hatching of the ova is regulated in a great measure by the 

 temperature of the season. In severe winters, the principle of life 

 \t slowly developed. He foand, by experiment, thiit iipawn placed 



