114 Ciliary Motions in Reptiles and Warm-blooded* Animals. 



OBS. Tribus osculans Personatis, Polemoniaceis et Bigiioniaceis pariter 

 affinis ; ab his, stigmate omninb indiviso et calyce polyphyllo, ab illis ? 

 corolla regulari, sestivatione convoluta distinguitur. Polemoniaceis, 

 imprimis Biapensiae convenit corolla regulari, sestivatione convolute, 

 stanrinum insertione, seminibus alatis, atta mendiscrepat stigmate 

 omninb indiviso et capsula biloculari. 

 1. Aragoa, Kunth. 



SIBTHORPIACE^. 

 CALYX 4-8-partitus, persistens. 



COROLLA rotata, 4-8-fida, regukris, decidua, sestivatione imbricata. 

 STAMINA 4-8, aequalia, corollse lobis alterna. Antherce biloculares : loculis 

 paraUelis. 



PISTILLUM 1. Ovarium biloculare. Stigma capitatum, indivisum. 

 CAPSULA biiocularis, bivalvis, polysperma. Placenta magna, spongiosa? 

 globosa. 



SEMINA erecta, testa membranacea. Albumen copiosum, dense carnosum, 

 EMBRYO teres, erectus, inclusus. Radicula longa, cylindracea, obtusa, urn- 



bilico obversa, centripeta. 

 Herbae foliis alternis indivisis, floribus axillaribus solitariis pedunculatis. 

 OBS. Familia admodum parva inter Scrophularineas et Primulaceas lo- 

 cum tenens. A prioribus flore regulari symmetrico et placenta globosa, 

 a posterioribus staminibus corollse lobis alternis et capsula biloculari 

 facile dignoscitur. 



1. Sibthorpia, L. 2. Bisandra, L. 3. ? Romanzovia, Cham. 4. ? Cap- 

 raria, L. (C. biflora.) 5. ? Scoparia, L. 



May 1. 1835. 



Account of the Discovery by Purkinje and Valentin of Ciliary 

 Motions in Reptiles and Warm-blooded Animals ; with Re- 

 marks, and additional Experiments. By William Sharpey, 

 M.D., F.R. S.E., Lecturer on Anatomy. Communicated 

 by the Author. 



A remarkable provision exists in many animals belonging to 

 the inferior tribes, by which fluids are moved along the surface 

 of different organs. The gills of the mussel afford a good ex- 

 ample of this motion ; if a portion of them be cut off and exa- 

 mined under water, the water will be perceived moving in a 

 current along the surface in a constant and determinate direc- 

 tion ; and when the piece of gill is inspected with the micro- 

 scope, its surface will be found covered with minute hair-like 

 organs or cilia, which are in a state of continual agitation or 

 oscillatory motion, by which they impel the fluid along the 

 surface. Drs Purkinje and Valentin of Breslaw have lately 

 made the interesting discovery that this provision exists also in 

 warm-blooded animals, having detected the ciliary motion on 

 the internal surface of the oviduct in birds and the Fallopian 



