XXXVIII. Continual Tumults of War 323 XXXIX. Various Incursions of the Mocobios and Tobas 329 XL. Small-pox the Origin of many Calamities and bloody Attacks 337 XLI. Four Hundred Spanish Horsemen, in conjunction with the Abipones, overcome a numerous Horde of Tobas 346 XLII. Anxiety of the Abipones concerning the Revenge of the Tobas. Contagion of the Tertian Fever 355 XLIII. An Assault of Six Hundred Savages on the Second of August 362 XLIV. Corollary to the Events detailed in the preceding Chapter 374 XLV. How arduous a Task it is to persuade the Abipones to enter Colonies, and to embrace the Religion of Christ 388 XLVI. No trifling Advantages derived from the Abiponian Colonies, though fewer than were expected 403 HISTORY OF THE ABIPONES. PART III. CHAPTER I. OF THE DEADLY HATRED OF THE ABIPONES, AND THEIR ALLIES THE MOCOBIOS, TOWARDS THE SPANIARDS.