THE BATS’ GUANO FROM GUNONG PONDOK. 
By L. Wray, JUN. 
The following analysis of the bats’ guano from the caves in the 
limestone hill called Gunong Pondok, at Gapis, has been communicated 
by Mr. Arthur Lutyens, of Waterloo Estate :— 
1 Water (lost at 212° F.) =f .. 22°21 
2 Organic Matter and Ammonia ‘Salts* on mee sh Rs nace aka lit 
3 Phosphoric Acidt 2. ; x oe ms or ss. 5:05 
4 Lime ae @ uaner = sh s: ac ne ae eu ZOLgD 
5 Sulphuric Acid oi “i 8 re si ae Ror ee t ts}s) 
6 Potash . Pe ae ee a a a vA 68 
7 Soda ia: A oe oy As oe aac ‘06 
8 Carbonic Acid, Magnesia, ‘Chlorine es : acc sith Sa .. 406 
9 Sand mae J a oe er 5 - ws ais pe roto) 
100°00 
Nitrogen as organic matter and Ammonia Salts : ae Sy alcaal 
Do. as Nitrates... a ae as. re we ae Zs ven 560 
Total Nitrogen .. 2°61 
* Equal to Ammopia.. cd Cait es vn icoWlG 
iF Do. Phosphate of Tine 53% sy Bee ay atcii) 
(Sd.) JoHN HueueEs, 
F. Inst. Chem., M. 8S. Pub. Anal., 
Analytical Laboratory, Consulting Chemist, Ceylon Planters’ Association. 
79, Mark Lane, London. 
The two constituents of guano which make it of special value as a 
manure are the ammonia and the phosphate of lime. In the above 
analysis these are given as—ammonia, 3:16 per cent, and phosphate of 
lime, 32°85 percent. 
The following averages, deduced from a number of analyses of 
different guanos, taken from Ure’s Dictionary of Arts, Manufactures 
and Mines, show the comparative value of this bats’ guano. 
Ammonia, Phospate of Lime, 
per cent, per cent, 
Peruvian Guano ... sine aes foe LU AUOD ac wae as .. 25°12 
Angamos ,, Rs ds Ace en 2000 ic a ait . §=©20°25 
Ichaboe 5 te ee oa; sean pdeOO! =e. ane het soo, OHIO) 
Patagonian ,, a es ees Osa: an Bs .. 47°40 
Saldanha Bay Guano. a aeli00: 2k i a ... 55°84 
Kooria Mooria _,, i: tr, Pe Or2oure. aR “3 ... 15°66 
