﻿STUDIES IN PLAGUE IMMUNITY. 297 



Series 58. — Showing passage of the strain "Pest Virulent," etc. — Continued. 



No. of 

 pas- 



Animal 

 No. 



1648 

 1649 

 1650 

 1653 

 1667 

 1668 

 1669 

 1673 

 1674 

 1676 

 1697 

 1698 

 1700 

 1702 

 1703 

 1704 

 1708 

 1709 

 1711 

 1712 

 1714 

 1724 

 1725 

 1728 

 1729 

 1745 

 1752 

 1755 

 1756 

 1759 

 1761 

 1762 

 1764 

 1765 

 1766 

 1768 

 1769 

 1770 

 1771 

 1772 

 1798 

 1799 

 1800 

 1818 

 1819 

 1820 

 1821 

 1831 

 1833 

 1834 



Date 

 inocu- 

 lated. 



Jan. 9 

 .... do__. 

 Jan. 10 

 Jan. 12 

 Jan. 14 



do 



Jan. 15 

 Jan. 17 

 Jan. 18 

 Jan. 19 

 Jan. 22 

 — do — 

 Jan. 23 

 Jan. 24 

 .... do... 

 Jan. 25 

 Jan. 26 

 Jan. 27 

 Jan. 28 

 Jan. 29 

 Jan. 31 

 Feb. 4 

 ....do — 

 Feb. 7 

 ....do... 

 Feb. 8 

 Feb. 11 

 Feb. 12 

 .— do... 

 Feb. 13 

 Feb. 15 

 Feb. 16 

 Feb. 17 

 Feb. 19 

 .... do — 

 Feb. 21 

 Feb. 23 

 Feb. 24 

 ....do... 

 .... do — 

 Feb. 26 



. do... 



—do... 

 Feb. 27 

 Mar. 2 

 Mar. 3 

 Mar. 5 

 Mar. 8 

 Mar. 10 

 Mar. 12 



How inoculated. 



Spleen 1645 ___ 



Spleen 1646 



Spleen 1643 



Spleen 1648 



Spleen 1649 



Spleen 1650 ... 



Spleen 1653 



Spleen 1669 



Spleen 1667 



Spleen 1668 



Spleen 1673 *.. 



Spleen 1674 



Spleen 1676 



Spleen 1697 



Spleen 1698 



Spleen 1700 ... 



Spleen 1702 



Spleen 1703 ... 

 Spleen 1704 — 

 Spleen 1708... 



Spleen 1712 



Spleen 1711 



Spleen 1714... 

 Spleen 1709 — 

 Spleen 1725 ... 



Spleen 1724 



Spleen 1728* .. 



Spleen 1729 



Spleen 1745 ___ 

 Spleen 1752 ... 

 Spleen 1755 ___ 

 Spleen 1759 — 

 Spleen 1761 — 



Spleen 1756 



Spleen 1762 ... 

 Spleen 1764 — 



Spleen 1765 



Spleen 1766 



do 



do 



Spleen 1768 



do 



do 



Spleen 1770 ... 

 Spleen 1800 — 



Spleen 1818 



Spleen 1819 



Spleen 1820 t- 



Spleenl821 



Spleen 1831 — 



Date of 

 death. 



Jan. 12 

 Jan. 14 

 ....do... 



Jan. 15 

 Jan. 18 

 Jan. 19 

 Jan. 17 

 Jan. 21 

 Jan. 22 

 Jan. 23 

 Jan. 24 

 ....do ... 

 Jan. 25 

 Jan. 26 

 Jan. 27 

 Jan. 28 

 Jan. 29 

 Feb. 6 

 Feb. 4 

 Jan. 31 

 Feb. 4 

 Feb. 8 

 Feb. 7 

 Feb. 10 

 Feb. 12 

 — do — 

 Feb. 13 

 Feb. 15 

 Feb. 19 

 Feb. 16 

 Feb. 17 

 Feb. 19 

 Feb. 21 

 Feb. 23 

 Feb. 24 

 Feb. 26 

 Mar. 2 

 Feb. 27 

 Mar. 1 

 Mar. 5 

 Mar. 1 

 ....do— . 

 Mar. 2 

 Mar. 3 

 Mar. 5 

 Mar. 7 

 Mar. 10 

 Mar. 12 

 Mar. 13 

 Mar. 16 



Num- 

 ber of 

 days 

 lived. 



3 

 5 

 4 

 3 

 4 

 5 

 2| 

 4 

 4 

 4 

 2 

 2 

 2 

 2 

 3 

 3 

 3 

 10 

 7 

 3 

 4 

 4 

 3 

 3 

 5 

 4 

 2i 

 3 

 7 

 3 

 2 

 4 

 4 

 4 

 5 

 5 

 7 

 3 

 4 

 9 

 4 

 4 

 5 

 4 

 3 

 4 

 5 

 4 

 3 

 4 



Culture from 

 heart. 



Bacillus pestis. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



* Spleen laid on ice one day before inoculation. 



f Spleen placed on ice twenty-four hours before inoculation. 



