Serious considerations on the salutary design of the act of Parliament for a regular, uniform register of the parish-poor in all the parishes within the bills of mortality : pointing out the humanity and utility which will attend the due execution thereof ... to which are added, some thoughts on the usefulness of ventilation ; the pernicious effects of bad air, narrow streets, and ruined houses ; the advantages of cleanliness and decent cloathing in workhouses ... in two letters addressed to a churchwarden.