. The Cuba review. 32 THE CUBA REVIEW boiler was thoroughly washed out with water from a hose at high pressure. The boiler was then closed, filled with clean water and steam raised, and put into commission again. A repetition of this at every week-end for a few weeks will thoroughly clean the dirtiest boiler. In handling caustic potash the utmost care must be used; it is truly caustic, and if a small portion splashes in one's face or eyes it w^ill cause serious trouble. The same is true of the hands. For a very hard scale an acid purger should be used, as lime is alkaline and its antidote is a
. The Cuba review. 32 THE CUBA REVIEW boiler was thoroughly washed out with water from a hose at high pressure. The boiler was then closed, filled with clean water and steam raised, and put into commission again. A repetition of this at every week-end for a few weeks will thoroughly clean the dirtiest boiler. In handling caustic potash the utmost care must be used; it is truly caustic, and if a small portion splashes in one's face or eyes it w^ill cause serious trouble. The same is true of the hands. For a very hard scale an acid purger should be used, as lime is alkaline and its antidote is an acid. Probably someone may exclaim loudly against using an acid purger, arguing that it will destroy the boiler. It is just liere that trouble is likely to ensue in the hands of an inexperienced person. In the first place, an acid purger is largely diluted with water, and it attacks the scale first, having the greatest affinity for it. After that it would attack the boiler plates if allowed to remain in the boiler, but there can be no after effects of this character from a boiler purger, because it is no longer in the boiler when the scale is removed, the boiler cleaned out by hand, washed with a hose, filled up and blown out again before steam is raised. Of the two evils, it is best to choose the least, and in this case the use of a strong boiler purge is less than the injury and loss of fuel caused by scale.—John Green in Pozver. Output of Plantations It is stated that two sugar centrals in Matanzas Province, "Dos Rosas" and "Preciosa", have been bought by an Amer- ican company for $S0O,0O0. The two estates are near Cardenas and the new owners propose to merge the two planta- tions into one large central. The former ownership was Cuban. Their output has been ranging between ,000 and 35,000 bags each annuallv. The Santa Gertrudis in Matanzas Prov- ince has completed its grinding with a yield of ,000 bags. With extension to its fields the estate e
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