haversian spaces-spaces in bone formed by the enlargement of haversian canals. haversian system-a central canal containing capillaries and the concentric osseous lamellae around it occurring in compact bone.
Any donation to a political party, campaign, or action committee is non-deductible. Other non-deductible contributions are those to individual people, labor unions, business associations, for-profit schools, for-profit hospitals, foreign governments, and fees paid to associations or state or municipal governments.
The IRS doesnât recognize all forms of giving as deductible, even if your donation goes to a tax-exempt organization. Here are some of the guidelines. For complete rules, see IRS Publication 526. 1  Money or property that is donated to a qualified organization is deductible.