460 PHILOSOPHICAL TRANSACTIONS. [aNNO 1720. 



Fig. 15, exhibits part of the left jaw-bone and cheek of a sheep, where the 

 bristles 1 , 2, 3, &c. show the constant number of excretory ducts from the 

 external maxillary gland in these animals. 



Fig. l6, shows part of the right cheek of a large dog, taken from the lower 

 jaw-bone; f, the orifice of Steno's salival duct; g, the orifice of Nuck's duct, 

 which rises as a papilla on the membrane bb ; h, Nuck's new duct, not found in 

 men, oxen, or sheep, but in dogs, their orbit not being entirely bony; i, Nuck's 

 gland; ooo, the orifices of some excretory ducts, belonging to the external 

 maxillary gland, that were too straight for the admission of bristles; qq, the 

 teeth. In this subject they are the teeth of the upper jaw, near the scond of 

 which, the orifice of Nuck's duct appears. 



Fig. 17j shows the back part, next the cutis, of the external maxillary gland 

 of the same dog, as it is beset with the buccal glandules. 



Fig. 18, explains the external maxillary gland in the right cheek of a calf. 

 In this subject I could only probe two ducts, 3, &c. would not admit bristles. 



On the Plague at Constantinople. By Emanuel Timone, M. D. Communicated 

 by the Author^ who had practised Physic for many Years at Constantinople, 

 to the British Envoy, Sir Robert Sutton ; and with his Permission transmitted 

 to the Royal Society by R, Hale, M. D. Translated and abridged from the 

 Latin. N° 364, p. 14. 



It is proved by historical documents, as well as by daily observation, that the 

 plague is brought from Egypt to Constantinople. Here it is fostered and 

 retained; and although this city is scarcely ever free from the seminia of a 

 former pestilence, yet a new fomes of contagion is every now and then imported. 

 It is for the most part suppressed by a severe degree of winter cold. Never- 

 theless, some few instances of infection occur even during the winter and 

 spring; in summer the disorder increases, and in the autumn it rages with the 

 utmost fury. The cool north-east winds (the Etesian winds) which set in at 

 stated times during the summer have no effect in checking the contagion; 

 which, on the contrary, is stopped in the summer season by the hot south 

 winds, if they continue for some time. As for the symptoms of the plague, 

 as it appears at Constantinople, they correspond exactly with those of the plague 

 at Nimeguen in 1636 and l637, as described by Diemerbroeck. It has, how- 

 ever, been observed, that here and there a horse, a dog, or a cat, has been 

 seized with the bubonary pestilence, and has died. The common people, and 

 especially the poorer sort, not only of the Turks but also of the Christians* 



* Greeks? for it is afterwards mentioned that the Christians do use precautions. 



