EXTRACTS AND ABSTRACTS FROM FOREIGN JOURNALS. 145 



12. House Sparrow (Fringilla 

 domestica, Linn.) 



1-6000 

 1-4570 



1-6400 

 1-3200 



1-4682 



13. Yellow Bunting (Emberiza 

 Citrinella, Linn.) 



1-5333 

 1-4572 



1-6400 

 1-3200 



1-4572 



These measurements, excepting No. 5, were obtained from the par- 

 ticles of adult birds at different seasons. The lymph- globules in most 

 of the above-named species, do not differ much in magnitude ; and it is 

 possible that further observations may show as much variety in the size 

 of the globules of any one bird, especially if examined at different pe- 

 riods and compared in growing and mature specimens. In a few in- 

 stances from one to five of the globules were seen to be inclosed with 

 granular matter in a cell, the diameter of the latter varying from 

 l-2600th to 1-1 114th of an inch. If the lymph-globule be regarded 

 as a cell-nucleus, of course the smaller rounded particles which it fre* 

 quently contains will be nucleoli. Sometimes from two to six of these 

 may be observed in one lymph-globule, in which case they are very mi- 

 nute ; and it is not unusual to see a single central and larger nucleolus 

 varying from a quarter to half the size of the lymph-globule. 



anfc ^Dbgtracttf from 

 [From Schlechtendal's Linnaa, 1842.] 



Mohl on the Structure of the Punctated Vessels of Plants. (Continued 

 from p. 122.) Under these circumstances the question arises, Shall 

 we consider all the before mentioned forms of vascular tissue as true 

 punctated vessels, or shall we thus alone regard those which possess on 

 all sides dots surrounded with a circle, looking upon the others as mixed 

 vessels ; or rather, ought we to make new and special divisions of vege- 

 table ducts in order to embrace the different varieties and appropriate to 

 them names ? The first proposition appears to be the best ; for on the 

 one hand they have a common character in the possession of a dot sur- 

 rounded with a circle, and which easily distinguishes them from other 

 vessels, and on the other hand the presence of which is on the whole 

 corelated to a dicotyledonous embryo. [After alluding to reasons why 

 the other propositions should not be followed, the author thus proceeds.] 



Iii order to investigate the nature of the punctations, the best plant 

 to examine is Cassyta glabella, as in this they are very large. In this 



VOL. II. L 



