mum 69 percent., minimum 0.3 per cent., average 20 per cent.; nitro-
gen, maximum 2.88 per cent., minimum 0.44 per cent., average i.iT
per cent.; potash, maximum 0.77 per cent., minimum 0.004 per cent.,
average 0.14 per cent.; phosphoric acid, maximum 0.24 per cent.,
minimum o.or per cent., average o. o per cent.; Insoluable Matter,
maximum 56 per cent., minimum 0.13 per cent., average 17 per cent.
This has reference to wet muck. The averages for barnyard manure
may be put at about the following : Moisture, 70 per cent.; organic
matter, 22 per cent.; ash, 8 per cent.; nitrogen, 0.41 per cent.; pot-
ash, 0.40 per cent.; phosphoric acid, 0.28 per cent.; insoluble matter,
7 per cent.
 So far as any conclusions are warranted by the limited study of
Florida muck, they may be stated thus:
 I. Muck is exceedingly variable in character and value.
 2. Muck is to be regarded as a nitrogenous fertilizer, containing
 much more of that element and much less of phosphate and potash
 than barnyard manure.
 3. Hence, in the use of muck as a fertilizer, -one should expect
 that it would need to be supplemented by phosphate and potash.
 4. Some mucks which contain a high percentage o! organic mat-
 ter, contain a high percentage ot nitrogen ; others with large quantity
 of organic matter have, on the other hand, but little nitrogen. One
 should expect the first to possess value as a nitrogenous fertilizer as well
 as a mulch ; whereas the latter could be valuable mainly as a mulch
 and mechanical improver of the soil.
 5. While not all muck with high percentage of organic matter
 contains also a high percentage (2 per cent. or more) of nitrogen, we
 have found no muck with less than 50 per cent. of organic matter
 which contained as much as 2 per cent. of nitrogen.
 6. In judging of the value of a muck, at least three things should
 be taken into account : (i) the quantity of organic matter (the greater
 this the better the muck, other things being equal); (2) the kind of
 .plants from which the muck has been Iormed (muck from succulent
 weeds, grass and mosses would likely contain more nitrogen than that
 from woody and fibrous substances); (3) the degree of decomposition
 (except, perhaps, for purposes of mulching, the more disintegrated
 and decayed a muck the better, other things being equal).
 The plant food in muck is generally understood to be in quite an
 inert and unavailable form. In view of the fact that much of our
 Florida muck contains a surprisingly large per cent. of nitrogen, the
 best methods of composting or otherwise treating it, to render the ni-
 trogen soluble,"is a subject worthy of careful study and investigation.
 The composting of muck with finely ground phosphate rock, contain-
 ing a goodly per cent. of carbonate of lime, is to be recommended as
 likely to give good results.
 ANALYSES OF THE ORANGE.
 Though isolated analyses of the orange have been made, no com-
 plete and extended study of it from the standpoint of chemistry has,
 so far as known to the writer, been attempted. A beginning in that