VOL. XXIIl.J PHILOSOPHICAL TRAJSTSACTIGNS. 45 



Fig. 2 represents part of the hinder foot of the young frog, viewed with the 

 same microscope when living; by which the different magnitude of the extre- 

 mities of the arteries and veins of the kings in the first figure, and in this ex- 

 pressed at cc, is very evident; the former being capable of admitting at least 

 three globules of blood to pass abreast, whereas the extremities of the arteries 

 and veins in the feet admit of one globule of the blood only to pass before the 

 other; a a the trunks of the arteries; bb those of the veins lying by the side of 

 the toes; cc their extremities continued with each other, in the transparent 

 membrane between the frog's toes; a a two of the frog's toes. 



Fig. 3 and 4 represent the extremities of the arteries and veins of a frog's 

 lungs, viewed with the 4th glass of the same microscope; aa the arteries: bb 

 the veins; cc their conjunctions with each other; d the area of the microscope. 



Fig. 5 represents one of the hexagonal area of a frog's lungs, which were 

 not so much distended by inflation as those parts of the lungs represented in the 

 two former figures 3 and 4; by which the little areas or cells in the interstices 

 of the extre.nities of the veins and arteries appear closer, and less than in the 

 two foregoing figures, though viewed by the same microscope; a the arteries; 

 B the veins; d the area, which is more magnified at fig. the 1st. 



Fig. 6 represents the lower part of one of the lobes of a water lizard's lungs, 

 as it appears by the microscope, when the blood is retained in the extremities 

 of the vessels, as in the preceding figures; a a the trunk of the pulmonic artery; 

 BB the vein; cc. ... their branches, joining with each other; dd the transpa- 

 rent smooth membrane, which in this animal is not vesiculated, or full of cells, 

 as in the lungs of frogs, on which the blood-vessels are expanded; nor does the 

 internal surface of this membrane differ from the external, as in frogs and divers 

 amphibious animals, the lungs of these water lizards being vesicated, and not 

 vesiculated. 



George Joseph Camellis Observations on the Birds of the Philippines. Commu- 

 nicated by Jarnes Petivery S.R.S. N'^285, p. 1394. 



This list contains a description of 7 1 different kinds of birds of the Philip- 

 pine isles. 



Some Remarkable Curiosities in Denmark and Holland, By Dr. fVm. Oliver. 



N°285, p. 1400. 



The colleges and schools in Copenhagen, both as to their structure and foun- 

 dations, are very ordinary; the best I saw there was the gift of the learned 

 Borrichius, and consists of 12 apartments, for as many students, conveniently 

 provided with stoves for their manner of living in that cold country. There is 



