
gk Sot hts 
CIRCULAR. 
The following analyses of substances used as fertilizers are pre-. 
sented. VATE 
Potash Phosphoric 
Ash. Nitrogen. K,O. acid P,O;. 
NMED OCLs: 6S oe, 3 01s Ste oe ages a L1,. 94. eve 
ETE SUB 25 ia oo) wialginie sists wes pte he 12.21 eae 
Leached ashes .......... wets pie ts 2.08 1.18 
Castor pomace... ...... 7.40 5.42 . 96 Lo 7g 
Malt screenings......... 8.95 4.50 2.30 1.54 
Analyses have also been made of a sample of ground Oakfield plaster 
and of ground shell mar]. ‘The sample of plaster is very pure, contain- 
ing over ninety-nine per cent of hydrated calcium sulphate. The 
ground marl is essentially carbonate of lime. 
Sulphuric Volatile 
Insoluble anhydride matter 
Water. matter. SOs. Lime. CO, etc. 
Oakfield plaster. . 20.43 36 46.19 reget (yMiatitan 
LNT TTY: VR OS a ep Oacheweian 46.50 42.69 
Three samples of swamp muck analyzed contain per cent: 
by 2. 3. 
GINA chs cca foie ass] shsieese siete 's beese' «0 27 28 07.65 58.68. 
Organic and volatile matter .......... 21.25 Shel Lota 2a 96 
RR rede a ets ag Cie as a's Seles a) ee Yoiate 1.47 1.24 17.36 
Nitrogen in dry substance............ 1.74 1.14 1.62 
New YorRK AGRICULTURAL EXPERIMENT STATION. 
Instructions for sampling Commercial Fertilizers. 
The Station is willing to undertake the analysis of commercial 
fertilizers (so far as its chemical facilities will admit) for the farmers 
of the State of New York, provided that the samples are sent in exact 
accordance with the following directions: 
1st. Provide a tea cup, some large papers, and for each sample a 
glass fruit can, holding about one quart that can be tightly closed ; all 
to be clean and dry. 
2nd, Weigh separately at least three average packages of the ferti- 
lizer, and enter these actual weights in the form for description of | 
sample. F 
3rd. Open the packages that have been weighed, and mix well to- 
gether the contents of each down to at least half its depth, emptying 
out upon a clean floor, if needful, and crushing any soft, moist lumps 
in order to facilitate mixture, but leaving hard, dry lumps unbroken, 
so that the sample shall exhibit the texture and mechanical condition 
of the fertilizer. 3 | 
4th. Take out five equal cupfuls from different parts of the mixed 
_ portion of each package. Pour them, fifteen in all, one over another 
upon the paper, intermix again thoroughly, but quickly, to avoid loss 
[Assem. Doc. No. 33.] 21 
