IV PREFACE. 



crown of a tooth. These and similar defects, in veterin- 

 ary as well as other works, will probably pass away in 

 the course of time. 



As a rule, where practicable, a plain English word has 

 been used to name a disease, the technical name being 

 given in a parenthesis. Where not practicable, the tech- 

 nical name is explained as in the following examples : 

 "Ecthyma (boil-like eruptions)." "Herpes (creeping, 

 spreading)." "Erythema (red, rose-colored)." Scores of 

 other parenthetical explanations are made here and there 

 throughout the work. 



The two descriptions of ' Measles ' (pages 316 and 328) 

 appear to be inharmonious. The first, based on Gress- 

 well, refers to the well known febrile skin disease; the 

 second, based on Armitage, refers to measle worms. In 

 quoting from different authors, there is sure to be more 

 or less confusion and a few apparent contradictions. 



Some useful information is contained in a note on 

 page 13 — namely, the measurement of medicines in ordi- 

 nary utensils. An important addition to the note, espe- 

 cially to farmers, is the fact that an average sized grain 

 of wheat weighs one-half grain — apothecaries' weight. 



New York, July, 1891. 



