INTRODUCTION. 



tained. As to the other kinds of bottles which are 

 needed, it will be seen later what is required. 



40. Several short glass tubes supplied with well 

 fitting india-rubber caps at one end, the other end 

 being drawn out so as only to leave narrow openings. 

 In the absence of ready-made india-rubber caps, one 

 can use pieces of thin india-rubber tubing tied up 

 tightly at one end. These latter are very useful for 

 taking up staining solutions and dropping them upon 

 the cover-glasses. 



41. Distilled water in several bottles of one litre 

 capacity. 



42. Absolute alcohol. 



43. Xylol. 



44. Ciiuada balsam. 



45. Cedar- wood oil. 



46. Aniline oil. 



47. Sulphuric acid. 



48. Nitric acid. 



49. Hydrochloric acid. 



50. Acetic acid. 



51. Glycerine. 



52. Concentrated solution of soda. 

 63. Sodic hydrate. 



54. Potassic hydrate. 



55. Potassic iodide. 



56. Paraffin. 



57. Vaseline. 



