APPENDIX. 205 



APPENDIX. 



i. 



The following tables may be useful if stains, &c., 

 have to be prepared when the metric weights and mea- 

 sures are not at hand. The equivalents given are not 

 absolutely accurate, but are sufficiently near for most 

 purposes. 



i Litre . . 351 fluid ounces. 



100 C.C. . . 3^ fluid ounces. 



i Gramme . i5'43 grains. 



i Fluid ounce . 28*4 c.c. 



i Fluid drachm 3-5 c.c. 



i Grain . . -064 gramme. 



To convert grammes per litre into grains per ounce 

 multiply by the factor T 7 ^. Thus 10 grammes per litre 

 = 10 x T 7 g- = 4*4 grains per ounce. 



To convert cubic centimetres per litre into minims 

 per ounce multiply by the factor ^f . Thus 25 c.c. per 

 litre = 25 x ^f = 12 minims per ounce. (A close 

 approximation is given by multiplying by i. 



To convert degrees Centigrade into degrees Fahren- 

 heit multiply by the factor f and add 32. 



II. 



NEISSER'S METHOD OF STAINING THE DIPHTHERIA 

 BACILLUS. 



The following method has been placed in the Appen- 

 dix as there is some doubt as to its value. It is a 



