RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 1 57 



lobate forms, mostly clavate and moving with the broader pole in 

 advance. Protoplasm fineh'^ granular, and when in motion more or 

 less distinctly striate. Nucleus spherical, granular, with a large 

 nucleolus. Distinct food particles commonly few or none. Size of 

 globular forms 0.054 mm. to 0.075 nim. in diameter ; elongated forms 

 0.075 mm. by 0,06 mm. to o. 15 mm. by 0.09. Parasitic in the large 

 intestine of Blatta oricntalis. 



The Endamocba blatter affords a good example of a primitive active 

 niideatcd organic corpuscle, or a so-called organic cell -d'itlwut a cell 

 'wall. In the encysted condition it would be a complete nucleated 

 organic cell. Endamcjeba may be recommended as a convenient 

 illustration of a primitive form of the organic cell on account of its 

 comparatively ready access. 



[January, 1880. No. 480. See Bibliography.] 



Notice of the Cruel Thread Worm, Filaria inimitis, of the Dog. — 

 Prof. Leidy directed attention to a specimen, presented by Mrs. 

 Laura M. Tovvne, of Beaufort, S. C, consisting of the heart and 

 part of one lung of a dog, containing thread worms. The right ven- 

 tricle of the heart and the pulmonary artery contained a bunch of the 

 parasites, and several also were contained in the lung. A similar 

 specimen, with the ventricle literally stuffed full of worms, is pre- 

 served in the Museum of the University of Pennsylvania. The par- 

 asite was described thirty years ago, in the proceedings of this Acad- 

 emy, under the names of Filaria Canis cordis and Filaria immilis (see 

 Proc. 1850, 118 ; 1856, 2, 55), and since has been repeatedly noticed 

 by ob.servers as infesting the dog in Europe, India, China, Japan, 

 and this country. 



[March. 1880. No 481 See Bibliography.] 



0)1 a Filaria Reported to have come froyn a Man. — Prof. Leidy ex- 

 hibited a large thread-worm, which had been submitted to his exam- 

 ination by Dr. J.J. Woodward, U. S. A. It was recently presented 

 to the Army Medical Museum, at Washington, by Dr. C. L. Gar- 

 nett, of Buffalo, Putnam Co., W. Va. Accompanying this speci- 

 men is the copy of a letter from Dr. Garnett to Dr. Woodward, from 

 which the following is an abstract : " During the winter of 1876 a 

 man, a common laborer, aged about iifty, presented himself to me 

 for treatment having a gleety discharge from the urethra, with a 

 burning sensation during and after micturition. Previously he had 

 been treated for gonorrhoea, and I prescribed accordingly. The 

 patient, not improving, applied to other practitioners. In April, 



