388 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



lower part of the syringe with olive oil. The whole or any part of the 

 deposit is sucked up by turning round the screw ring on the piston rod. 

 The canula should be quite 4 cm. long, and have the ends rounded off. 



(6) Miscellaneous. 



Modification of Cornet's Forceps.* — V. Schliipfer describes the 

 following modification of Cornet's forceps. One half of the instrument 

 (fig. 72) is at the same time the spring and the handle. To the rounded 

 ends are jointed on the grips, the ends of which are curved so that 

 when closed they form an ellipse. The great advantage of this form of 



V ^ 



Fig. 72. 



grip is that the staining fluid does not run under as it does in the 

 ordinary pattern. It will serve to hold capillary pipettes as shown in 

 the illustration, as well as cover-glasses. 



Simple Method for Distinguishing between Human and Animal 

 Blood. f — H. Marx and E. Ehrnrooth describe a method for distinguishing 

 between the blood of man and the lower mammalia. It depends on 

 the observation that the action of homologous and heterologous sera on 

 fresh human blood is recognisable under the Microscope. Human red 

 corpuscles are rapidly agglutinated by an alien serum, the erythrocytes 

 becoming pale and accumulating in clumps directly after contact with 

 the foreign serum. The technique is simple. A solution of the sus- 

 pected blood is made with ■ 6 p.c. salt solution. Some of this is placed 

 on a slide, and to it is added a droplet of fresh human blood. The two 



* Zeitschr. wiss. Mikrosk., xxi. (1904) pp. 458-60 (1 fig.). 

 t Miiuchener Med. Wocheuschr., li. (1904) p. 293 (2 figs.). 



