PREFACE.

Some portions of the following pages have already appeared in the monthly numbers of the Sanitary¹ Engineer, and the complete work is now published with a view to assist Surveyors of Towns and others who are directly engaged in providing that house dustbins shall be regularly cleared, and streets kept clean; and also in the hope that it may be the means of drawing some public attention to the question, thus showing the householder something of what is being done for his welfare by Sanitary Authorities, and how each individual may assist in the good work, instead of, as is now frequently the case, inadvertently or purposely retarding² the execution of some very necessary though unostentatious sanitary measures. I am not aware that any book, or even pamphlet, has yet been written on this subject, and I venture to believe that in these pages there may be found something to interest all readers.

H. P. B.

Exeter, May, 1881.

1 sanitary   

adj.卫生方面的，卫生的，清洁的，卫生的

参考例句：

• It's not sanitary to let flies come near food.让苍蝇接近食物是不卫生的。
• The sanitary conditions in this restaurant are abominable.这家饭馆的卫生状况糟透了。

2 retarding   

使减速( retard的现在分词 )； 妨碍； 阻止； 推迟

参考例句：

• There may be a need for retarding growth chemically to keep trees within bounds. 可能需要用化学剂抑制生长，使树冠保持在一定的范围内。
• In some instances, an aversion to debt is retarding growth. 在某些情况下，对债务的反感正阻碍经济增长。