600. The infection was virulent during the winter, when Portsmouth was

crowded with ships; and in the first five months of 1780, when 3751 cases of fever were admitted during the decline of the epidemic, one in eight died. The following shows how much fever preponderated at Haslar Hospital in 1780. In 8143 admissions on the medical side, the chief forms of sickness were as follows[201]: Continued Fevers 5539 Scurvy 1457 Rheumatism 327 Flux 240 Consumption 218 Smallpox 42 Blane gives the instance of the ‘Intrepid,’ one of the Channel Fleet under Hardy in 1779: “Almost the whole of her crew either died at sea or were sent to the hospital upon arriving at Portsmouth. This ship, after refitting, was pretty healthy for a little time; but probably from the operation of the old adhering infection, she became extremely sickly immediately after joining our fleet and sent 200 men to the hospital after arriving in the West Indies. Most of these were ill of dysentery[202].” During a voyage of three weeks of the ‘Alcide’ and ‘Torbay’ from the Windward Islands to New York in September, 1780, nearly a half of the men were unfit. In the ‘Alcide’ it was a fever that raged, in the ‘Torbay’ it was a dysentery[203]. These experiences of fever in the ships of the Royal navy continued to the end of the 18th century. In Trotter’s time, as in Lind’s, receiving ships were a source of contagion to others, one ship of the kind, the ‘Cambridge’ having diffused fever among many ships of the Channel Fleet by men drafted from her[204]. Ship typhus was also an incident of the voyages of the East India Company’s ships, which nearly always carried troops. In the voyage of the ‘Talbot,’ 22 March--25 August, 1768, with 240 persons on board, “towards the end of July a fever of a very bad kind made its appearance, attended with delirium, low pulse, petechiae or livid vibices and hæmorrhages from the nose, of which one died and three or four escaped hard.” The sick were isolated, and the infection did not spread. Such outbreaks of typhus were not uncommon at sea, although the loss of life from them was small beside that from the fevers of Madagascar, Sumatra, Batavia and Bengal. The ship typhus usually began on board among the soldiers. The most notable point is that relapses were common, as Lind also observed at Haslar Hospital; some on board the ‘Lascelles’ in 1783 (150 attacks among 151 soldiers) had relapsed seven times. It does not appear, however, that the best class of merchantmen suffered greatly from fevers. Dr Clark, who compiled a report of the practice in fevers in the ships of the East India Company from 1770 to 1785, had reason to congratulate the Company on the general healthiness of their fleet: “When ships set out at a proper season, when they are not too much crowded, when the weather is favourable, and no mismanagement appears, fewer lives are lost in these long voyages than in the most healthy country villages. And in perusing the medical journals I have the peculiar pleasure of finding that many ships have arrived in India without the loss of a single life by disease,” e.g. the ‘Valentine’ in 1784, seven months out, with 300 souls, no deaths, and the ‘Barrington’ in 1789, no deaths outward bound[205]. On the other hand, these English reports give incidentally the most unfavourable accounts of the Dutch East Indian ships. Three Dutch ships, then in Praya Bay, St Jago (Cape de Verde Islands), had buried 70 to 80 men each, and had some hundreds of sick on board. Another report says: “Before we left Table Bay several Dutch ships arrived, some of which had buried 80 people in the voyage from Holland. None lost less than 40 men. I am informed that some of their ships last year buried 200 men”--the causes of the sickness being overcrowding, filth, and the slowness of the voyages. One experience of the very worst kind happened to an English expedition consisting of the 100th regiment, the 98th regiment, the second battalion of the 42nd, and four additional companies. They had formed part of the force for the reduction of the Cape of Good Hope, whence they re-embarked for Bombay. During the voyage from Saldanha Bay a contagious fever and scurvy broke out among the troops, who were crowded and badly clothed; dead men were thrown overboard by dozens, and the regiments were reduced to a third of their original numbers. Six officers of the 100th regiment died, and an equal if not greater proportion of those of the 98th and 42nd. The other chief occasion of ship typhus was the emigration to the American and West Indian colonies from Britain and Ireland. The Irish emigration was especially active from the beginning of the 18th century, owing to rack-renting and other causes. Madden[206] professed to know that one-third of the Irish who went to the West Indies (perhaps he should have included Carolina) perished either on the voyage or by diseases caught in the first weeks after landing; and as we know that typhus attended the Irish emigration in the 19th century, we may infer that the same was the cause of mortality in the 18th. The trouble from ship-fever in the navy was so great all through the 18th century that many ingenious shifts were tried to overcome it. Towards the end of the century, the favourite device was fumigation with the vapour of mineral acids; one such plan, for which the Admiralty paid a good sum, ended in the burning of several ships to the water’s edge. An earlier plan was ventilation of the hold and ’tween decks by means of Sutton’s pipes[207], which found a strong advocate in the Rev. Stephen Hales, of the Royal Society[208]. Twice in the course of a paper to that learned body[209] he asserts that the noxious, putrid, close, confined, pestilential air of ships’ holds and ’tween decks “has destroyed millions of mankind”; on the other hand, according to the testimony of a captain of the navy, Sutton’s pipes had kept his ship free from fever. Lind caps this with the case of H.M.S. ‘Sheerness,’ bound to the East Indies. She was fitted with Sutton’s pipes, the dietary being at the same time so arranged that the men had salt meat only once a week. After a very long passage of five months and some days she arrived at the Cape of Good Hope without having had one man sick. “As the use of Sutton’s pipes had been then newly introduced into the king’s ships, the captain was willing to ascribe part of such an uncommon healthfulness in so long a run to their beneficial effects; but it was soon discovered that, by the neglect of the carpenter, the cock of the pipes had been all this while kept shut[210].” Ship-fever was at length got rid of by more homely and more radical means than scientific ingenuity. Lind had shown one root of the evil to lie in the pressing of men just out of gaol. Admiral Boscawen, by his unaided wits, discovered another means of checking it. He avoided the mixing of fresh hands with crews seasoned to their ships, unless when some evident utility or necessity of service made it proper; “and upon this principle he used to resist the solicitation of captains, when they requested to carry men from one ship to another when changing their command[211].” Towards the end of the 18th century many reforms were made in the naval service--in the dietary, in the allowance of soap, in keeping the bilges clean, in the use of iron and lead instead of timber; so that Blane dates from the year 1796 a new era in the health of the navy[212]. The “Putrid Constitution” of Fevers in the middle third of the 18th Century. Resuming the history of fevers among the people at large from the great typhus epidemic of 1741-42 to the end of the century, we find the conditions somewhat different in the earlier and later divisions of the period. The time of prosperity, when England exported large quantities of wheat in every year except two or three, is reckoned from 1715 to 1765; after the latter date England gradually ceased to be an exporting country, owing to various causes, including the increase of pasture farming and the growth of industrial populations in the northern counties. The year 1765 marks the beginning of what has been called the Industrial Revolution; and it is also an important point of time in the history of the fevers of the country, for it is in the generation after that we obtain all the best information on what may be called industrial typhus, in the writings of a group of physicians who were at once philanthropic and exact. But there was an earlier period of fever, which is somewhat difficult to the historian. It is perhaps the last period in which Sydenham’s language of “epidemic constitutions” seems to be appropriate, whether it be that the writers of the time were still under his influence, or because the prevalent maladies could not well be accounted for in any other way. The constitution in question was a “putrid” one. It coincided with the great outburst of putrid or gangrenous sore-throat, to be described elsewhere; and it included an extensive prevalence of fevers which were also called putrid or nervous, and sometimes called miliary. Fevers of the same kind, and with the same miliary rash, are described by earlier writers, such as Huxham. Perhaps the most correct view of the matter is to consider this type of fever as corresponding roughly to the middle third of the century, and as having been interrupted by the typhus epidemic of 1741-42, during a time of special distress. Besides the great outburst of putrid or malignant sore-throat, there was also a disastrous murrain of cattle for several years; and at Rouen there was a remarkable fever which some English writers of the time took to be the highest manifestation of the same “putrid” constitution that they discovered also in the English and Irish fevers. The fever at Rouen which Le Cat specially described to the Royal Society was an outbreak from the end of November, 1753, to February,