396 POP PO ; R 
f 
A letter concerning the prefent increafe of the 
people in Britain and Ireland Brakenridge 
An extract of the regifter of the parifti of Great 
ShefFord, in Berkfhire, for ten years $ with 
obfervations on the fame - Forjler 
* Letter concerning the number of people in Eng- 
land - - Forjler 
An anfwer to the account of the numbers and 
increafe of the people of England Brakenridge 
— Of* the increafe and mortality of the inhabitants 
in the ifland of Madeira Fkomm Hekerden 
* — — Obfervations on the expectations of lives, the 
increafe of mankind, the influence of gre t 
towns on population, and particularly the ftate 
of London with refpeCt to healthfulnefs and 
number of inhabitants - Price 
— . — Extract of a letter concerning the increafe of 
population in Anglefey - Panton 
- — — Obfervations on the ftate of population in Man- 
chefter, and other adjacent places Percival 
—— — Obfervations on the ftate ©f population in Man- 
cheiter, and other adjacent places concluded 
Percival 
— A fupplement to a paper, entitled, 66 oblerva- 
tions on the population of Manchefter” 
Percival 
— Obfervations on the population and difea r es of 
Chefter, in the year 1774 - Haygartk 
— ■ — See Mortality 
Porcupine Quills. A letter giving fome account 
of the roots ufed by the Indians, in the neigh- 
bourhood of Hudfon’s Bay, to dye porcupine 
quills - - Forjler 
Pores. The defeription and ufe of the pores in the 
flein of the hands and feet - Grew 
— — Microfcopical obfervations on the pores 
Leeuwenhoek 
Porisms. Two general propofitions of Pappus of 
Alexandria, taking in a great part of Euclid’s 
porifm?, reftored by - - Simfon 
Porphyre. Diic&ions for enquiries concerning 
ftones, and other materials for the ufe of build- 
ing, together with a fuggeftion for retrieving 
the art of hardening fteel for cutting porphyre 
and other hard marbles - Qlaenhurgh 
— Letter concerning the porphyry pillars in Egypt 
R.H. 
Tranf. 
XLIX 877 
L 35 6 
— 457 
L 465 
LVII 461 
LIX 89 
LX 1 II 180 
LXIV 54 
LXV 322 
LXVI 160 
LXVIII 131 
LXII 54 
XIV 566 
XVII 949 
XXXII 330 
VIII 6010 
XIV 624 
Abridg. 
Ill 685 
VI 76 
III 528 
Porpoise 
