APPENDIX 



185 



by the mixing pipette d into the blood cell e ; the cell is then just filled with 

 water, and the blood and water thoroughly mixed by the handle of c being 



Fig. 68. — Oliver's hsemoglobiuometer : a, stamlard gradatioiis ; 6, laucet ; c, capillaij 

 measaring pipette ; d. mudng pipette ; «, blood cell and cover glass. 



used as a stirrer. The cover glass is then adjusted, when a small bubble 

 should form a clear sign that the cell has not been overfilled. The cell is 



