170 Mr. Gulliver on the Minute Anatomy of Animals. 



vast number of pale globules resembling pus, (fig. 2, A.) be- 

 sides others of a reddish colour. The latter corpuscles (fig. 

 2, B.) appeared to be composed of very delicate pale enve- 

 lopes including from one to four blood-discs, rarely five or 

 six, some of which were altered in shape, while others pre- 

 sented nearly their usual size and contour. They were not 

 spherical, as some of them appear to be in the figure. The 

 envelopes, which seemed at first like shadows, were distinct 

 enough in different lights, even after the addition of water and 

 dilute acetic acid, and were rendered very obvious by the ac- 

 tion of tincture of iodine. 



Fig. 1. 



Fig. 2. 



Fig. 1. Globules mentioned in case 1. A, pus-like globules 

 of blood from the facial vein ; two of them are round, 

 another is rather oval, a fourth is made up of aggregated 

 granules, and the remaining one is much smaller and more 

 shapeless than the others. B, the same globules treated with 

 dilute acetic acid. C, pale globules from the blood of a healthy 

 mare, in one of which the nucleus is shown by dilute acetic 

 acid. D, blood-discs or unchanged red particles from the 

 same animal for comparison. 



Fig. 2. Corpuscles described in case 2. A, pus-like glo- 

 bules of blood from the digital vein, as they appeared without 

 addition. B, reddish corpuscles, of which seven are here de- 

 picted, from the same blood ; four of them contain what ap- 

 pear to be single blood-discs, three of which are variously 

 misshapen ; of the three other corpuscles one includes two discs 

 seen on their flat surfaces and touching merely at the mar- 

 gins, another has four slightly overlapping at the edges, and 

 the remaining one incloses a pile of similar discs seen on their 

 edges and with their flat surfaces together. Compare these 

 discs with the unchanged red particles at D in fig. \ . 



All the objects in both figures are magnified exactly to the 

 same degree, namely, about 800 diameters. Compare the nu- 



