An atlas of clinical microscopy . riven out. Microscopically, they can easily be distin-guished, the earthy phosphates not forming such beautiful moss-likestructures, but being finer, more dust-like. As in a sediment of urates a few uric acid crystals rapidly areforming, so we find likewise a few triple phosphates in a sedimentof earthy phosphates. TEiPLE phosphate; ammonio-magnesium phosphate. Neutral calcium phosphate and magnesium phosphate, beingsoluble only in acid urine, are precipitated as soon as the urineturns alkaline in consequence of the formation of ammonium car-bonate. Magnesium
An atlas of clinical microscopy . riven out. Microscopically, they can easily be distin-guished, the earthy phosphates not forming such beautiful moss-likestructures, but being finer, more dust-like. As in a sediment of urates a few uric acid crystals rapidly areforming, so we find likewise a few triple phosphates in a sedimentof earthy phosphates. TEiPLE phosphate; ammonio-magnesium phosphate. Neutral calcium phosphate and magnesium phosphate, beingsoluble only in acid urine, are precipitated as soon as the urineturns alkaline in consequence of the formation of ammonium car-bonate. Magnesium phosphate combines with the free ammoniumand forms ammonio-magnesium phosphate. This is always dis-tinctly crystalline. The original shape is a prism, similar to acofiin-cover, hence the name coffin-shaped crystals (Plate 17). Butthe most marked deviations and combinations occur, so differentfrom the original forms that they can only be recognized by thetransition formations—e. g., the fern-shaped crystals of Plate 19. PLATE 17. Mezger Utk larthy phosphates with coffin shaped crystals Peyers microscopy. PLATE 18
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmicroscopy, bookyear1
